Featured Sherbet glasses with teardrop inside. Maker??

First off, am I correct calling this a "sherbet" glass?

Was hoping someone might recognize the maker. There are 4 of these. What is unusual about these is that there is a teardrop shaped bubble in the handle, then each has a tiny teardrop in the base. No signatures. At first I wondered if Steuben possibly, but looks like Steuben is always signed. Here are photos:


Looking down into the bowl, a flower shape:









Here is the teardrop shape in the handle:


And each glass has this tiny one on the bottom, too:






Let me know if anyone recognizes the maker. Thanks!

 

Id think champagne coupe's but Im often wrong.

 

I wondered if champagne's.... thanks, Johnny.

These are fairly heavy. I even wondered if Steuben as they do a similar teardrop in the handle, but these are positively unsigned and as I understand Steuben is always signed.

 

looks like "R" has this among their unknowns
Unknown Manufacturer, UNK804 | Replacements, Ltd.

 

Amazing detective work. Thank you @TallCakes!

 

No, Steuben is NOT always sigsned.