According to its registry page at the Professional Sports Authenticator (PSA) website there are 55 cards in this set. It was released in 1966 by Topps. My collection of TV memorabilia includes just two of these cards which is unusual. I’m guessing the cards were sold in packs of eight or ten cards so why I have just two is a mystery.
Here they are:
Did you collect Lost in Space trading cards back in the 1960s? Were you able to collect the entire set?