Caring for Your Militaria Collection: A Preservation Guide

The Golden Rule

The single most important principle of militaria preservation is: do less, not more. Heavy-handed cleaning, aggressive polishing, and well-meaning “restoration” have destroyed the value and historical integrity of more items than age, damp, or moth ever have.

Original patina — the natural surface ageing of metal, leather, and fabric — is a positive attribute, not a defect. It proves authenticity and records the passage of time. Removing it reduces both historical and monetary value.

Metals: Badges, Medals, and Buttons

Bronze and Brass

Most British military badges are struck in brass, bronze, or gilding metal. These develop a warm brown or green patina over decades.

• Do not polish — Brasso and similar polishes remove original finishes and detail
• Dust with a soft brush — a sable or camel-hair artist’s brush is ideal
• Warm soapy water — for genuinely dirty items, a brief soak in tepid water with a drop of washing-up liquid, followed by thorough drying, is safe
• Dry completely — trapped moisture causes verdigris (green copper corrosion)

Silver

Officer-quality badges and some medals (Distinguished Conduct Medal, Military Medal) are silver. Silver tarnishes but should not be aggressively polished.

• A gentle rub with a silver cloth is usually sufficient
• For heavy tarnish, a brief dip in proprietary silver cleaner, immediately rinsed and dried
• Store in acid-free tissue or tarnish-resistant bags

Medals

Named medals should never be polished — the naming is often only a few microns deep and polishing can erase it. Store medals flat or in display cases, not loose in drawers where they can chafe against each other (causing “contact marks”).

Medal ribbons can be replaced if worn, but original ribbons — especially brooch-mounted or swing-mounted on old bars — add value and should be preserved where possible.

Textiles: Uniforms and Equipment

Storage

• Clean before storage — moths are attracted to organic residues (sweat, food, oils)
• Acid-free tissue — use generously when folding or wrapping uniforms
• Breathable covers — cotton garment bags, never plastic (which traps moisture and causes mould)
• Cedar or lavender — natural moth deterrents; avoid naphthalene mothballs which leave residues

Display

• Avoid direct sunlight — UV causes fading and fabric degradation
• Use padded hangers for tunics and jackets
• If framing, use UV-filtering glass and acid-free mounting

Leather

Sam Browne belts, holsters, and boots benefit from occasional conditioning with Renaissance Wax or neutral saddle soap. Avoid silicone-based products. Cracked leather should be treated gently — forcing stiff leather open can cause irreversible breakage.

Paper: Documents, Photographs, and Ephemera

• Handle with clean, dry hands (cotton gloves are unnecessary for most paper handling and reduce dexterity)
• Store in acid-free sleeves or folders
• Never laminate — lamination is irreversible and traps any existing acid against the paper
• Keep flat — rolled documents should be gradually relaxed, not forced flat
• Photograph before handling — a digital record protects against accidental damage

Environment

The ideal storage environment for most militaria:

Avoid storing collections in attics (extreme temperature swings), garages (moisture, pests), or unheated outbuildings. A spare bedroom with curtains drawn is often the best domestic storage environment.

Insurance and Documentation

Photograph every item in your collection and maintain a simple spreadsheet recording: description, acquisition date, price paid, condition, and provenance. This serves as both an insurance record and a reference for your heirs. Standard home insurance often has low limits for “collectables” — specialist policies from firms like Aon, Hiscox, or Lloyd & Whyte offer proper cover.

Metals: Badges, Buttons, and Edged Weapons

Metal militaria — cap badges, buttons, buckles, medals, bayonets, and swords — each requires specific care depending on the metal type and the presence of original finishes.

Brass and Copper Alloys

Brass cap badges, buttons, and accoutrements develop a natural patina over time that most collectors prefer to preserve. Aggressive polishing removes material and can obliterate fine detail, maker’s marks, and surface texture. If cleaning is genuinely necessary, warm soapy water and a soft brush will remove surface grime. For a gentle shine without abrasion, Renaissance Wax — a microcrystalline wax developed by the British Museum — provides a protective barrier that inhibits further tarnishing without altering the surface.

Never use Brasso or similar metal polishes on collectible items. These products are designed for items in daily use and contain abrasives that remove metal with each application. A cap badge that has been repeatedly polished over decades will show noticeably softer detail compared to an unpolished example.

Steel and Iron

Bayonets, swords, and firearms components made from carbon steel are vulnerable to rust. Light surface rust can be addressed with fine steel wool (0000 grade) and a drop of light machine oil, working gently along the length of the blade. Deep pitting rust has already damaged the metal and cannot be fully reversed — stabilisation rather than removal is the goal. After cleaning, apply a light coating of acid-free mineral oil (such as Renaissance Wax or museum-grade gun oil) to prevent further oxidation.

Store steel items in a dry environment. Silica gel packets in display cases or storage boxes help control humidity. Avoid storing steel in leather scabbards long-term, as leather can trap moisture and accelerate corrosion. If the item has its original scabbard, store them separately with acid-free tissue between them.

Silver and White Metal

Silver medals and officers’ badges tarnish naturally to a dark grey or black. This tarnish is silver sulphide, formed by reaction with airborne hydrogen sulphide (present in tiny quantities even in clean air). Most collectors accept a degree of tarnish as evidence of age. If cleaning is required, a silver polishing cloth (impregnated with a mild tarnish inhibitor) is the safest approach. Avoid silver dip solutions, which can strip surface detail and leave an unnatural brightness.

Paper and Textile Items

Documents, photographs, postcards, letters, and printed ephemera are among the most informative items in any militaria collection — but also among the most fragile.

Paper Conservation

Store all paper items flat in acid-free folders or sleeves. Standard cardboard, tissue paper, and plastic sleeves from stationery shops are NOT acid-free and will cause foxing, yellowing, and brittleness over time. Purpose-made archival supplies from conservation suppliers (such as Preservation Equipment Ltd or Secol) are specifically designed for long-term storage.

Never laminate original documents — lamination is irreversible and traps moisture. Never use adhesive tape (including so-called “archival” tape) directly on original items. If documents need mounting for display, use archival photo corners or edge strips that hold the item without touching the surface.

Photographs require particular care. Albumen prints (common in Victorian military photography) are sensitive to humidity and light; daguerreotypes and ambrotypes need protection from physical contact (fingerprints cause irreversible damage). Store photographs in individual acid-free envelopes, face-up, in a cool dry location.

Textiles and Uniforms

Uniforms, flags, and cloth insignia deteriorate through a combination of light, humidity, pests, and mechanical stress. The cardinal rules are:

• Avoid direct sunlight — UV radiation causes fading and fibre degradation. Display uniforms behind UV-filtering glass and rotate displayed items periodically.
• Control humidity — Ideal storage is 45-55% relative humidity. Too dry and fibres become brittle; too damp and mould growth occurs.
• Prevent pest damage — Moths and carpet beetles are the primary threats. Cedar blocks or lavender sachets provide gentle deterrence. Naphthalene mothballs are effective but leave a persistent odour and can damage some fabrics.
• Support the weight — hanging heavy uniforms on coat hangers distorts shoulders and causes stress tears at seams. Fold uniforms with acid-free tissue and store flat, or use padded mannequin forms for display.

Display Environment

The ideal display environment balances visibility with preservation. Key environmental factors:

• Temperature: 18-22°C is ideal. Avoid radiators, south-facing windows, and attic spaces with extreme temperature swings.
• Light: Maximum 50 lux for sensitive items (textiles, watercolours, photographs). LED lighting generates less UV than fluorescent or halogen alternatives.
• Dust: Use enclosed display cases where possible. Open shelving accumulates dust that is abrasive and can attract moisture.

Shadow box frames are excellent for displaying medal groups, cap badges, and small items. Use acid-free backing board and UV-filtering glass. Pin items with stainless steel entomological pins (which will not corrode) rather than ordinary domestic pins.

When to Consult a Professional

Some conservation tasks are beyond the amateur. Seek professional help for:

• Heavily corroded iron or steel items where structural integrity is compromised
• Wet or mould-damaged documents and photographs
• Textile items with active pest infestation
• Oil paintings or watercolours with flaking paint
• Firearms requiring deactivation certification

The Institute of Conservation (Icon) maintains a register of accredited conservators searchable by specialism and location.

Sources

• Paine, Crispin (ed.). Standards in the Museum Care of Larger and Working Objects. Museums and Galleries Commission, 1994.
• National Trust. Manual of Housekeeping: The Care of Collections in Historic Houses. Butterworth-Heinemann, 2006.
• Institute of Conservation (Icon). Conservation Register, searchable online.
• Preservation Equipment Ltd. Technical guides and acid-free archival supplies.
• Imperial War Museum. Collections care guidance notes.

Insurance and Documentation

Maintaining a photographic record of every item in your collection serves both insurance and research purposes. Photograph each item from multiple angles — front, reverse, detail of markings, and any damage or wear. Include a ruler for scale. Store these images digitally with backup copies in a separate location. For insurance, keep purchase receipts, auction invoices, and provenance documentation alongside the photographs. A well-documented collection is not only easier to insure but also more valuable to future collectors and researchers, as the provenance chain adds historical context that enhances every item in the collection.