Your big ticket items like the signs and globes are good, it's some of the plaques, cans, calendars, desk/paper weights, smalls/trinkets like this Pier 1 Imports looking ashtray, that was overlooked and advertised as original- "A very nice example of this Gilmore Oil Co. ashtray. Piece retains a fair amount of the original paint and the lion is still intact. A nice aged piece with great patina....
Auction one is on the left. One on right is from ebay...