I have a Gibson F2 mandolin with a serial number of 82525 and the label appears to be 100% original and correct. From this number I calculate it to be built in 1925. However, the FON stamped inside is 8814, which would suggest 1927. It is a well documented instrument with a lot of provenance but this discrepancy has me puzzled. Any further information would be most appreciated. Thanks.
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