Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums Petroliana Value Questions Sky chief pump plates

Need some help for a friend. At a yard sale he just bought 6 in the original box sky chief supreme instant power pump plates. They are not metal or porcelain. Does anyone have idea of value? They are nos. thanks for your help. if possible I'll post pictures later

Do they look like this? I believe these were a temporary sign to go over the Sky Chief Pump plate to advertise the new product. Notcie the screw holes are the same as the pump plate and the sign is the same size. I have seen these on ebay range from $35 to $75????(memory is getting bad)

I should also add that lots of these have been found of late and the value may be lower. Just my opinion.