Yamaha basses

Anyone know of any websites that can date a Yamaha bass by its headstock logo. Yamaha recycles serail numbers every 10 years and so I found a website that dated my Yammy bass by the serial number but it gave me 34 different years it could be from. I want to try to narrow it down evern furthere. And the headstock logos on Yamaha guitars and basses also change over the years so I am thinking if I can find some website that can tell me when different logo were used it wil help me pinpoint the exact year my bass was made.
If you know of site please post it for me. and thank you.