Its Duncan glass - but what it is?

I have 3 of these recantangle clear dishes. Each measures about 7.75"x4.75. Cleaning out my mother's basement which also housed grandparents things after they passed away. They were covered in a good layer of dust but had the stickers on. Odd there are only 3 but who knows. Design on bottom is very neat. At first glass ash tray but no marks for cigarette. Relish dish? The pattern seems rather masuline so I was wondering if it was a mans dressing table dish??? I'm at a loss to even describe.

Thank you in advance. Any information would be appreciated.