The Cambridge Glass Company manufactured their "Martha" grape etch during the 1930s.
This is a 6 piece set of 5 ounce pink glass tumblers, measuring about 3-5/8" tall. They have 12 optic panels in each glass and are completely surrounded with grape clusters, leaves and vines. The pontils are finished.
No chips or cracks or repairs. I've photographed the glasses on dark and light surfaces, with and without a flash.
Packed with care to assure a safe arrival.