I’m pretty sure I’ve already posted all of these great White Stag ads, but I’m re-posting them just to take a close look at the gloves. In the above add from 1946, the shape and the color are pretty much the same as my pair.
And the same is true of these gloves in a 1945 ad.
This ad from 1944 shows two-tone gloves, but the contrast is much greater, and the palm area, larger.
This ad from 1952 shows two pairs of two-tone gloves. Unfortunately, the gloves are not mentioned in the ad, and there is no sight of the zippers.
This is a page from a White Stag catalog, not dated, but World War II era. There are no zippers mentioned, but that is to be expected during a time when metal was going toward the war effort. My gloves are very similar to the description of No, 80. My guess is that mine are “natural” or “sand” with aspen blue” or “glacier blue” leather. I have more pages from the catalog here.