Would like to know if anyone has a 235 Standard, Regular or DuraCushion center fold disk, 14'3 or 18'6 foot widths. My father in law built these from 1972 to 1985 in Moline at JD plow and planter factory. His welder number was 80 that he stamped on the disk. I asked where but he could not remember he said since he had been retired for 30 years, but he thought it should be on the top somewhere maybe hitch or top of disk frame. My question is if you have one and have time to look for a 80 stamped on it. If anyone has one and still use it would like to get pictures to give to my father in law. Thanks