RPPC New York City St Patrick's Cathedral Exterior Neo-Gothic Real Photo PC

Pre-owned. No marks from postal service but the postage side has been written on.  See photos for assessment of any visible wear normally associated with old postcards. Especially, but not limited to, edge and corner wear, tanning, and discolorations. 
At first I thought this was a photo but there is a very faint square on back where stamp was to be affixed to.