Talk ‘n’ Action Tender Screws

@Super No, the same one middle screw also connects to / holds in the coal bin. It couldn’t be glued because you need to put two more batteries in the top for it to work.

Also, just opened them up again and found the date codes. The one with one screw is from 2000 and the one with three screws is from 2003. Still don’t know when the transition was made, though.