You are correct...I was using hockey-reference.com as a source, and I didn't read the fine print (really not that fine, it's quite large) that says they only have sweater number data starting in 1950-51, so when you search for #12's it appears as if Abel only wore it for 2 seasons. I will amend my list, as he obviously belongs on there. Good chance there are some more like this out there. Anyone have any?
You could at least give me a day or two to answer first!! Apart from Jarrett, that number hasn't been prominent in Seals history. You have Boom Boom Caron from 67/68, which was before I was following hockey, then it lay dormant a few years after Jarrett when the bearded Butch Williams picked it up in 74/75. Then Mike Fidler had 2 decent seasons in Cleveland with it.