Specs: 1730/1729 and 1714/1701. These are the tall black plates with square getters. I recently did a lot of tube rolling for a new amplifier and now I need to sell off some tubes to finance the next purchase. I have a second pair of these that I'm keeping -- to give you an idea how good they sound, even compared to 1960's Mullard ribbed plates (which are also excellent just different). Very fair asking price compared to what the online dealers are charging for well matched pairs of these ($150 and up).
I have a second pair also for sale. It's also a perfect matched pair and identical in structure (although electrically they won't match the first set). Asking same price for it.