Mamiya TLR Summary 15
Although there are some exceptions, which may be due to inaccurate or sparse data, it appears that serial number sequences were
issued by item type. It is reasonable to expect that numbers were issued sequentially within a block, though there is no evidence to
support this supposition. There are 5, 6, and 7 digit numbers, as well as letter prefixes for bodies. Since the letter prefix used on the
C33 was ‘H’, even those are not in chronological sequence.
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