Hi everyone. Longtime viewer, first time poster. Anyway, I just bought a nice informal men's suit, dated to 1937. My main question is; why might it have 3 buttons on the cuffs? There are 2 on the left and only 1 on the right. I might have thought of it as a one time thing, but while browsing Etsy I found a similar era jacket with 3 buttons on the cuffs. Is there an explanation for this? Thanks for any answers!