Now this is a post one can get his teeth into. I love the comments and voiced opinions. Our old and sometimes reliable "Player Autograph Baseball Glove Finder" shows the following endorsed mitts for Gehrig: "Ken Wel 634,632; Banner, Coast To Coast, Dubow, Peerless, Belknap, also a catalogued D&M 651 (1927) also a breakdown on the different numbers used in the catalogs for Ken Wel: 612, 623, 630, 632, 634.
Didn't list the Higgins, which I assume was made by Dubow, both being headquartered in Chicago. Didn't list the Pennant.
Belknap is a block letter Gehrig as I recall. I had "assumed" the Banner, Coast to Coast, Peerless and the Pennant were all probably made by Denkert as private labels. A comparison of the miss as has been done will reveal more. Gehrig evidently signed contracts with Ken Wel, D&M, Dubow and Denkert I am guessing and they had rights to produce "off brand" mitts for him, hence his facsimile signature. Could be that Ken Wel or D&M made private label gloves.
Now, that we've weighed in with that, how about Bill Diebold's Mizuno
Gehrig mitt (Bill asked me if I had known about 1930s Mizuno gloves of the 1930s and I had owned a 1930s Mizuno mitt and sold it, I believe to Richard Macaluso.
Here's the ebay link on Everything Baseball Gehrig on eBay.
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... tsupported