oh, and it is excellent that the fork and frame numbers match...and that lends a little more credence to the guess that RY belongs to the brazer (a lot of manufacturers used that a a little QC...see some Masi's made in America, and some of the early Trek's as examples.) The forks were assembled in batches, and got no such individual workmanship/ownership decrees.

So, if so, that leaves you with WG as a clue to the manufacturer, perhaps.