Generally, model marking started showing up in 1958 shipments. Model designation stamping was ordered on June 12, 1957 and Model 10s allegedly were first stamped in September 1957. C3817xx was almost certainly manufactured in mid 1956, or possibly earlier that year, but was likely to have been shipped sometime later in 1956 or even early 1957. In any event, yours should not have the Model stamping in the yoke area, so it is a pre-Model 10. Looks like you need a factory letter if you need proof positive it was shipped in 1957. Best anyone can say is that it could have been.
Last edited by DWalt; 01-04-2016 at 10:42 AM.
|