https://www.ebay.com/itm/26596530222...Bk9SR6rdx6XfYg
also attached the listing photos, including one that shows both the King Seeley part number V6 259 and the Chevrolet number 3693461. The buy it now" price is USD 99.00. The parts book page above lists this one as suiting 1950 235 engines (another model is listed for COE). I think that the same governor is probably a multi-year fit and that the parts book just cut off at 1950...