Thin Rib, Diamond
These Thin Rib vases seem to have been produced by Diamond in great quantities. They have six ribs, a starred base with a diameter just under three inches, and are found mostly in marigold. On the right is a rare example in purple courtesy of Neal Becker. It is just under eight inches tall. The heights on these small thin vases usually range between about eight and ten inches tall. Marigold examples worth $10 to $20, other colors are scarce and some worth considerably more.

In 2015, an 11-inch version of this vase in peach opal sold for $25.

Updated 11/7/2021

This 6-inch example in peach opal in a spittoon shape, sold in 2021 for $120. Another, a bit shorter and just flared, sold at the same auction for $90. Photo courtesy of Burns auctions.

Information on vases with vertical ribs here.

Also see Ten Thirteen R vases