Mitchell Beninga asks about this Standard Oil Anhydrous Ammonia sign. In the lower right hand corner are the letters "SPI-210" and "M-C-A-1528" 19 inches wide by 24 inches tall. Any information you could provide me would be appreciated, age, value?

StandardOilAnhydrousAmmoniasign..jpg
Standard Oil Anhydrous Ammonia sign

Last edited by Oldgas; Sun Nov 15 2009 03:01 PM.

Jim "Oldgas" Potts
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