1970's Marklin HO set, all as shown.
Locomotive, cars, transformer, switches, and many track pieces.
Cars are working and in pretty good shape with the exception of the caboose (couplings are off, one missing).
It's been a few years since I ran it but it worked then, if a little haltingly. I'm sure it needs some cleaning to remove oxidation from contacts.
Includes Marklin catalog as shown.