Wilson produced their Concave putter between 1931 and 1935.  The club has a face concave from heel to toe and a lead weight positioned under a brass plate under both the head and toe. There is no question that this club is pretty much a knock-off of Forgan's Max-Mo putter.

Bother putters were designed to redirect a ball mis-hit on either the toe or heel back towards the hole—and to give the otherwise mis-hit (and therefore) weak putt more momentum than it would otherwise have had.  To accomplish these things, the clubface has a concave curve heel to toe and there are lead weights under the brass plate on the heel and toe of the sole.  In theory, a ball struck on the toe of a RH putter would be redirected a touch to the left to correct for what would normally be a miss to the right of the hole. The lead weight under the toe would add back the distance lost with such a mis-hit.  Again, that was the theory. For more on the Maxmo & Concave putter, see TCA2 v1 p303

This Concave putter has its original 34 1/2" shaft and grip.  There is a significant crack on the sole between the soleplates. Even so, there are many other things that are right about this club.

This club is from the Fred X. Fry collection and bears his inventory label on its shaft.  Fry, the dean of American golf club collectors, was busy building his collection forty years before the Golf Collectors Society (now The Golf Heritage Society) was formed in 1970. Collecting with great passion, Fry amassed approximately 450 clubs, mostly putters. He cataloged, displayed, and cherished his treasures.  A number of national magazines ran articles about his collection of putters between 1936 and 1963. For more on Fry and to view some of the articles, Click Here.