Received a very quick response from the seller.
The Serial # is WL4003967, so you're looking at something around mid-1974.
Description in the seller's own words: >>> i've gotten a lot of questions on this bike. here's all the extra info: The frame size is 24."
The Seat tube is 24 1/4"
The standover height is 34"
Its 24 1/4" from the center of the Bottom Bracket (BB) to the top of the seat tube.
The Serial # is WL4003967
The bike has not been repainted. Silver is the original color. The bike still has its original "Carlton: and Reynolds 531 decals.
The lugs are fancy & chrome. They have not been painted over.
The Seat post, front and rear shifters, front and rear hubs, cranks and pedals are all original Campy
The seat is a Vetta "VSA" >>
Hope that answers some of your questions. Larry "no connection or relation blah blah blah" Osborn Morgantown WV