I see you are a new member. This has been discussed before but the short of it is that for anyone to be able to give any kind of a value approximation, there has to be several good pictures of the item involved, because there are just too many variables concerning these collectibles! Post a few good pictures of the pump and I'm sure a few members will do their best to help you out.
Here's a few signs we have for sale Conoco Motor Oil $1250 Small Atlantic Porcelain Pump Plate $200 (5x9 inch) Auto-lite embossed tin sign $1800 Pure Oil Fully Embossed $250 Broadway of America SSP Road Sign (US 70) $1200 Daniel Boone Trail SSP Road Sign $900
All prices include shipping w insurance. Any questions please send a pm. All signs have been authenticated by TAC (The Authentication Company).