The old Fender serial number scheme did not change immediately as CBS to use up existing parts and use existing tooling however a large F logo was added to the neck plate shortly after the accquisition.
SERIAL NUMBERS and APPROXIMATE PRODUCTION DATES 1965 to 1976 In 1982 the Vintage Series of guitars was introduced.
If you're a seller, the value is the minimum amount you accept to sell it.. You can check ebay for completed sales for the same model, but value on ebay is not value in a shop or elsewhere, for reasons.
Outside of a completed transaction, value has no meaning, so please do not ask me to value your guitar. Harmony instruments were produced on an industrial scale.
As a result, only a handful of guys in the world are ready to pay real money for a rare Harmony model.
In the Harmony world, the interested buyer is often rarer than the guitar itself.
- Usually you will find two stamps inside your Harmony guitar.