I have a set just like this and I am missing the "Y", I bought them cheaply from a guy who also has the correct winged foot that matches and he will not part with it. I keep trying, but so far no luck.
I have watched Ebay for the last couple of years looking for the proper foot and a "Y", but I have never seen either of them show up yet.
I am also curious as to when they were used.
I did buy a larger foot many years ago that was of the same construction - It came from a large Goodyear warehouse in Georgia. The guy that sold it to me bought it from the demo company as they were taking down the building, It is over 3' high and about 6' long, he said the letters were trashed and he could not save them, but were over 3' high each.
Attached is what we both need - just in the proper size.
