Definitely not a square cased engine.
Supposed to be a correct restoration but fitted socket bolts in the engine, seat is not original, tank trim is not original and the right hand switch doesn't look right either.
Looks to be Candy Gold Custom to me, very orangey.
Exhausts are later type 550K ones, NOT original, originals didn't have the writing on the back, the other odd thing, claims very low mileage and then lists loads of parts changed that really should still be very useable after so little mileage, pistons, jets for instance.
It's very nice, just not a really great restoration if you were going for original.