Thank you Doug, I appreciate your reply. I'm looking specifically for a Sands key/fob and I've seen a couple that had keys with numbers that matched the fobs, and some that don't. The only difference I can see that might matter is that I've never seen a matching key # on a fob that was from the Sands tower, and those with matching #s seem to be from the other buildings. Any insight into the Sands keys? --- Thanks again, your collection is great!