Can anyone tell me about this Guild label? It appears to be a transitional label with no manufacturer location. It comes from a 1974 F50 Bld. I thought the transitional period for manufacture location was earlier. Dating the guitar based on the serial number has it as being made in 1974. That would be Westerly, RI........correct? Why would a transitional label be used on a 1974 guitar? Didn't Guild do away with the Guarantee Label shown here earlier then 74?