Found an old Penzbest sign in excellent condition. It's tin, approx. 2 1/2 ft. wide and about 4 ft. high, and sets in a wooden frame. The layout is a big circle with the slogan "The 2000 mile oil" in an arc on the top, the middle says Penzbest and 100% Pennsylvania oil, and the bottom has the two finger slogan. It also says something about maintain oil level on the bottom. I do not collect these and was wondering if anyone could give me a ballpark figure of what it might be worth. I don't have a picture on hand, but will soon. Any help would be appreciated. Thanks.