Featured Uranium Glass Sherbets Maker?

I'm outside my usual realm here, but I also love glass. This is just an idle curiosity question. I bought four of these sherbet dishes at a flea market long before I had ever heard of uranium glass.

My glass photography skills are underdeveloped, so hope these pictures, taken in window glass-filtered sunlight, give enough information to bring out some suggestions as to maker. There are no seams. And yes, there is a flea bite in the rim of this one.

 

I don't have access to my books right now but the stems are similar to some Libbey Rock Sharpe stems.

 

I think you'll find that Rock Sharpe only used crystal (no color) glass. Libbey never made Rock Sharpe, they bought the company, sold off the old stock and kept the catalogs. When researchers found the catalogs in the Libbey archives they started calling the products of both companies "Libbey-Rock Sharpe".

 

Pretty!

 

Thank you both. I just liked the vivid color. After following up with Cherryhill's thoughts about Libbey-Rock Sharpe, I am more than ever impressed with the ability of our 'glassies' to remember and recognize patterns and shapes and to be able to assign them to makers, when there are so many, and so many that look very similar.

Don't think they have the quality to be crystal, but are finely made, not clunky.