Hi all, here we have my fathers train set, please look at the photos carefully it says OO/HO for size. It's old! The locomotive was reconditioned a few decades ago and never used, just wrapped in the box. It's been in the garage and never used since he was a boy. So the contents will be a check, but being honest, I haven't set it up. I have tried to find info on this but I believe it has new carriages from a previous release back in the 1950s, but these are my thing. I will do my best to answer questions, but I'm no expert. Thanks for looking.