Primarily Petroliana Shop Talk Forums Non-Petro Discussions Non-petro Discussion and Showcase RE: Any one know what year this was made?

So I bought a porcelain telephone sign and it seems legit but wanted to see if anyone could confirm this? Maybe also let me know if they know about what year these were made?
ebay item number: 190751620774

http://www.ebay.com/itm/190751620774?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Much appreciated with any help. Thanks