I picked this one up last week. Mine is the same model as the ebay glove of a couple of months ago but in a little better condition. I like the grommet web along with the long pocket and stubby fingers. This is a softie if there ever was one. If this was made by Dubow, they had access to tanned leather that was first rate.
I used saddle soap for some surface dirt on the leather and then a light coat of vaseline. It did not need a lot of work. The brass button was pretty tarnished but cleaned up easily. The green gunk in the metal grommets took the most time to clean out. Luckily there weren't many grommets. You can kind of see some residual staining of the lacing as it enters the grommets.