Rapid Transit System Sign

[Old B5]

Just picked this sign up. Not sure how to tell if it is vintage porcelain or re-production but looks vintage to me. Slight variation to touch between colors, and has a white primer color under sign colors. Anyone else seen one like it? 2 sided 30" diameter and really heavy. Either way its going to look cool hanging in my garage.

[cuda hunter]

That will look great hanging in your garage!

If it is porcelain, you should see some signs of chipping around the edges somewhere.  Porcelain is like glass and will chip like glass whereas paint doesn't chip the same. Got any close ups of any chipped areas?