Set of 7 Vintage Pressed Glass Cappuccino Cups - Extraduro, LP

I have searched but I cannot find anything on the maker of these small cups or mugs. Each footed glass is ribbed and has a clear handle. There are air bubbles in many of the pieces.
Each glass is approximately 3” tall and 2.75” long with the handle.
On the bottom of two of the glasses is ‘Extraduro, LP.’

Most items in my shop are vintage and are not brand new and come from estate sales. The items may show minor age-related wear and/or minor flaws consistent with the date of manufacture (please be sure to check photos carefully as they are part of the description). I do my best to describe any imperfections. If you have any questions please don't hesitate to ask!

ETSY charges individual packages usually on shipping. If you purchase more than 1 item, I will refund any overpaid postage when shipped. Thank you for looking.