It's hard to tell looking down on them. If they look a little like long balloons than thats a good start. Theres a link to some though hole Ta caps on the GRF up above, thats my listing. It has lots of pics of Ta caps.
Those boards look like they came from industrial machinery. love those type of boards. It's hard sometimes to get paid for what they are worth. I have 100# of boards that came from mitsubishi machinery control panels populated on both sides and only get offered MB price or finger price not what I believe they are worth. So I keep them for now;).
Eric