This is a pair of Rosenthal Crystal Polaris pattern red wine glasses. The pattern was introduced in 1970 and features a deep cut square pattern to the underside of the bowl, the stem, and the top of the foot. They are heavy crystal. If you are trying to precisely match these to a set you have, these show the ring around the edge of the foot as shown in photo 5 and they are marked with the Crown over R etch. The glasses stand 5-1/4" (13.3 cm) tall and measure hotsell 3-1/4" (8.3 cm) in diameter at the mouth. Each has a comfortable capacity of 8 ounces (235 ml) and 10 ounces (295 ml) filled to the rim. The pieces are in excellent condition without chips, flea bites, scratches, or staining. These appear to have always been hand washed if they were used.
We also have a single glass in this pattern available here:
https://www.etsy.com/sg-en/listing/1094561827/
Our selection of wine glasses may be seen here:
https://www.etsy.com/sg-en/shop/soflacollectors86?ref=hdr_shop_menu&search_query=wine+glasses
Our entire assortment of stemware is shown here:
https://www.etsy.com/shop/soflacollectors86?ref=hdr_shop_menu§ion_id=10483091
Product code: Rosenthal Crystal Polaris Pattern Red hotsell Wine Glasses (pair)