Not marked in the gloves.
The actual measurement across the outside of the leather (across the palm) is three-and-one-eighth inches.
The length, finger tip to cuff, is ten inches approx.
Please remember that these are very old gloves.
They were made 70 years ago, to wartime economy standards, and are not likely to be sturdy enough for normal everyday use.
Unused vintage gloves, in good condition.
They are about 70 years old, and they need to be handled with care.
As you can see, there is a thread attached to one glove - this appears to be the original thread that would have held the two gloves together in the shop.
Presumably the gloves have not been used more than a few times, as most people would remove that loose thread before wearing them.
There are some scuffs on the part that covers the wrist.