Hi Al; I don't have those valves, anymore..but do have a lot of other rare vintage aero stuff/instrument/parts, I am liquidating. Selling most of my collection. (took five tractor trailer loads to move here, then I added more.) But have quietly sold a few tractor trailer loads to musuems and major collections. That is reason you did not see them on Internet.. Wife had breast cancer last year, doing great now but was a tough year on us, so time to get the collection down to Two or three bookcases of my favorite stuff and one or two display cabinets. But this should all be on a NEW thread, so I will move it there for more detail.
I have visited the collectios at Creve Coer, some years ago. Awesome collections and people there. Indelible memories of the best kind..
NOW! for some neat Mahoney-Ryan memorabilia. Here are two of my favorites. Also have LOTS of colorful, Original stuff for various St.Louis and Kansas City aero companies and airfcraft etc.
Here is a St. Louis, Mahoney-Ryan Aircraft Corporation document of Feb. 1929 with lots of bits of info to be gleaned. It was signed for Mahoney -Ryan by a Karl Luecler? (not sure of spelling fom his signature). Then there is a beautiful early check (pre-"Spirit" days) from May 1925, boldy signed by T. Claude Ryan, form Ryan Flying Co ("Fly with Ryan", "Lt. T.C.Ryan Mgr.")from San Diego. Ryan's signature is almost 3/4 inch high so nice & big, and a faily low-numbered 9early) check, to boot.