Great Auction thanks for sharing your story with us about your Grandfather and the beer tray my wife and I love collecting them just being antique is cool.
Best I can tell you is its very old My grandfather owned a wine shop in Chicago a this was at his lake house where I visited in Wisconsin every summer. When he passed away I ended up with some of the Items. I'm 42 and My whole life these were at the Lake house so they are Antique to me. I'm no pro but I would say they are the real thing.