Malcolm,
Searching through the shed the other day and finding things I didn't know I had I now have three Wiard corn planters and there was a very nice one on ebay a couple days ago I didn't get also you have one so that makes five that still exist in very good shape. Wonder how many more are out there??
I don't know what time frame these were made but I always figured the early teens but after looking at some of the Wiard fold outs that were recently on ebay they are pictured on the same brochure with the Wallis 12-20 on the cover so I am thinking they aren't as old as I thought.
Joe