I've been thinking there was something familiar about the Fett gloves, and think I've finally found out why.
I was just browsing through Brak's CD and spotted a photo of the inside wrist of the right glove. Photo 'Boba Fett 797' refers.
You can see a 3/4 or half-circle cutout, with a hemmed edge about 3/16" wide, with an overlap where there is a fastening. I'm sure that these gloves are button-fastened men's dress gloves, like those worn by various Lodge members, plus our police station had a box of them for funerals and formal dress occasions way back when.
I've seen a lot of these worn back in the 70's and 80's. They were a soft, fluffy material, looking just like those on the mannequin. They were imported from England, I think. The white colour, plus the light weight of the cloth and the apparent ease of stitching make me sure that's what these are.
Just my two cents worth. Cheers.