« Reply #7 on: October 04, 2019, 01:31:20 PM »
just my little 2 cents. the strap buckles are like my 75 550's and i know earlier 750's had that square buckle....
That's definitely not a 550 seat. I don't think that is the original cover (too nice given the rust on the bottom) so it is likely that the cover and strap are replacements.
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Current: '76 CB750F. Previous: '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200