6x6 medium format camera back or film holder insert

Photography Equipment

Uncommon

Identified on November 8, 2026

Estimated Value

$25-$100

This appears to be a 6x6 medium format camera back, film holder, or accessory insert associated with a larger camera system. The visible markings '6 x 6', 'CM 157040 S2A', and 'CB 99222' suggest a modular photographic component, possibly for a medium format camera body or back assembly. The construction shows a black enamel or painted metal frame with a central viewing or film opening and textured exterior covering. The design is utilitarian and precision-made, consistent with professional or advanced amateur photographic equipment from the mid-20th century. No maker's logo is visible in this view, so exact identification is uncertain.

Era

Mid-20th Century to Late 20th Century (approximately 1950s-1980s)

Origin

Likely Japan or Western Europe; exact manufacturer unknown from visible markings

Material

Black painted metal, plastic, and textured synthetic covering

Condition

Good overall condition with visible surface wear, light scuffing, and age-related dust/discoloration; no obvious cracks or major damage visible in the image

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Physical Details

Dimensions

Approximately 6 x 6 inches visible opening; overall component likely around 4 to 8 inches across depending on the full assembly

Weight

Light to Medium

Authentication

Authenticity Score

Medium — the markings and construction appear consistent with genuine vintage photographic equipment, but the exact model and manufacturer cannot be confirmed from this single image

Provenance

Likely from a modular medium format camera system; the 'S2A' marking may indicate compatibility with a specific camera model or back designation, but the exact provenance cannot be confirmed from the image alone

Historical Significance

Medium format 6x6 systems were widely used by professionals and serious amateurs for studio, portrait, and documentary photography. Components like this are historically significant as part of the era of modular film-based camera systems before digital photography became dominant.

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This identification and value range are AI-generated research aids, not authentication, certification, or a formal appraisal. Learn about the limitations and when to consult a qualified professional appraiser.