Got it from my uncle. It’s an Allis Chalmers Model 63. 5' 3 blade mower. It has been sitting for at least 10+ years, I got it home and after a little lube I got it hooked up and to my surprise it still works till the next day when I went in to the garage and there was a quart + of gear lube on the floor. I can only assume that the seals in the gearbox are bad from sitting for so long. I started the dis assembly and also searching for new seals but I can’t find anything. I searched for a few hours, and called 4 places with no luck other than more #’s to call. It seems that this mower was also used with the Simplicity brand tractors. From the research I have done I think the seals are a simplicity # 2108542-8 but everywhere I call said that number is no good and doesn’t cross reference to anything. Anybody have any idea or know anything about this mower? Its serial # 1211.