This postcard is a small hand made box with a hand carved fish loose inside it. The back has the typical postcard place for address and stamp.
Definition of a postcard:
A postcard or post card is a rectangular piece of thick paper or thin cardboard intended for writing and mailing without an envelope. However, some postcards have deviated from this (for example, shaped postcards).
With this said, I have postcard made from Plastic, Metal, Leather, Fabric and Wood. One of my wood cards Has been sent through the mail with a stamp on the back. (See yesterday's blog) So, 'wood' you consider this a postcard?
unused, the man I bought it from ($3.00) said it is from the 1940's