OK, I've cracked the part number code. The things we are looking for are: 7101J50 CxE 7108J50 CxE where x is a letter selecting the contact material (about 10 options, including gold, silver, gold-over-silver, etc). The 7101's are the normal permanent contact, the 7108's are the momentary contact used in a few positions. The ones Dave found are ZQE's, the 'Z' meaning they are solder lugs, not PCB through-hole lugs, and the 'Q' meaning silver contacts. A Google search didn't find any 7101J50 C's, only Z's. But the C+K Web site showed two places (Electro-Sonic and Online-Components) stocking 7101J50 CQE2's (the trailing '2' means 'black actuator' - their name for what I've been calling the toggle, the plastic part the finger touches); investigating further now. Noel