These were obtained from an old service garage and are not newly remanufactured parts. According to my New Departure / Hyatt bearing parts list, this is used on the following models and years.Both have a spot or two of extremely minor surface rust from many years of shelf storage. May or may not need a light polishing up before installation. I opened the outer race for the first time to inspect and take pictures. Please note, I do not have the inner race for this set (IR310).
The original boxes are in good condition. The item "NOS Hyatt OR310 RA310 Differential Bearing 1931-1949 John Deere Tractor Model D" is in sale since Monday, April 22, 2019. This item is in the category "Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment Parts & Accessories\Antique & Vintage Equipment Parts". The seller is "huffmanhogs" and is located in Portage, Ohio. This item can be shipped worldwide.