Condition:
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as
they are part of the condition, the country of origin could be the USA.
I
have for sell a
“Vintage M Grumbacher Gamma Photo Retouch Kit No 25-14"
The
Vintage M Grumbacher Gamma Photo Retouch Kit (most notably
Kit No. 25-14) was
an essential, industry-standard tool used by graphic artists, professional photographers, and photo restorers from the 1950s through the 1980s. Long before the digital era of Photoshop clone stamps and healing brushes, these kits were explicitly manufactured for the physical spot-retouching, correction, and airbrushing of black-and-white (and sepia) photographic prints.
[1]What it Was Used For
The kit was designed to correct imperfections, remove dust spots, hide scratches, and enhance details directly on photographic emulsions. Grumbacher formulated these specific paints—often referred to as
Gamma Retouching Colors—to perfectly match the unique sheen, texture, and gray scale values of traditional glossy and matte photographic papers. Famous photographers and art conservationists, including those working on prints by masters like Ansel Adams, relied on these exact pigments for precise tonal matching.
[1, 2, 3]Typical Kit Contents
A complete vintage set usually featured a selection of specialized media arranged in a compact palette or metal box:
- Gamma Neutral Grays (Numbered 1 to 5): A precisely graduated spectrum of neutral gray tones. Gamma 1 was the lightest gray, stepping up in density to Gamma 5, allowing artists to match any halftone or highlight in a black-and-white photo perfectly. [1]
- Black and White Tubes: Typically included Gloss/Glossy Black, Matte Black, Glossy White, and Matte White to replicate the exact finish of different photo paper bases.
- M. Grumbacher Brushes: High-grade, ultra-fine spotting brushes designed to hold a minimal amount of moisture for microscopic detailing. [1]
- Mixing Palette: Built right into the plastic or metal casing lid for blending values