Does Anyone Recognize This Brownie?

[Flame Out]

There is a Brownie auxillary tranny for sale by a neighbor that is supposedly out of an early '50 Ford 1.5 ton. It is not a Spicer but something like Watson or Watley. Does this sound familiar? It is a 4 speed auxillary.

My intention is to put it behind the Warner T-98 in my 1964 F-500 and infornt of the Rockwwell 6.30 diff (or 6.20, I can't recall which). I need more gears and espacially an overdrive. This truck was resprung to handly 15,000 pounds and the truck often leaves the aggregate plant at 21,000 pounds. So, more gears would help.