Yes, serial 15.3x is way to early. The earliest 2913 subreferences I have or have seen falls in these serial ranges,
typically!:
2913-1 = 15.9x to 16.0x, produced from late 1957 to early/mid 1958
(@cristos71 , are you sure your's is a -1 and not a 2 or 3?)
2913-2 & 2913-3 = 16.3x to 16.5x, produced from late 58 to early/mid 60.
The 2913-6's most often have 16.46x to 16.6x, produced late 60, some overlapping serial and production with -3, -4 and -5's.
I had no problem getting an extract for my 16.07x 2913-1, which is from marts 1958...
...so
@abrod520
Is your's with cal. 500 or 501... and how many Jewels ~ what does the text on the rotor say?
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