I think dad said the mower was a #5. The A and B were 1951 models. Grandpa bought the B new, The only tractor he bought new. Dad and his friends would laugh about Grandpa mowing hay. Said it was the most beautiful job of mowing they ever seen. They would laugh and say he had it down to a science. Didn't matter the field size, One big field or three small ones. It was always the same result. You had to drive a stake in the ground to make sure he was moving. LOL! He'd be over there puffing away on Swisher Sweets and would put down enough for one thousand bales everyday.give or take 5 or 6 bales. Heavy hay or light hay, it didn't matter. He'd done it so long, he could tell by looking at the crop and knew how much he needed to get one thousand. They all said, they never seen anything like it. They told about how he'd never look back at the baler very often, and just be puffing away on his cigar. They'd get a load on the wagon and not yell at him to stop sometimes. They would jump off and unhook the wagon to see how far he'd run before he looked back. Most of the time it was 3 or for bales, but every so often he might drop 20. lmao!