Again, sorting family negatives... I found another format I can't identify. (The dimensions don't match any of the sizes listed in the Wiki film format article.) The roll width is exactly 2-3/4" (70 mm). The image is about 2-1/2" (62 mm) in that dimension. The other image dimension is about 1-3/4" (44 mm). (I believe that's the actual frame width, ie., the image has not been trimmed.) It's a studio portrait circa 1962 or 1963, so likely a professional/commercial film, but I think it predates 220 format (1965-). Any ideas?
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