Posted 7 years ago
This is a heavy porcelain sign-NH3-is anhydrous ammonia, a fertilizer.
I found this sign on a grain elevator in the small town of Biggs in N.Ca.
One of my favorite signs.It measures app. 36" by 36".It is actually a half sign,originally 2 halves were bolted together.Now--if i could only find the other half!