Featured Unknown 1930's sherbet glasses

I have a set of sherbet glasses I inherited from my grandmother I'd like to know more about. I know they were made in the early to mid 1930's, purchased in Minnesota, and were apparently very expensive at the time. They are blown glass in a fine line optic pattern, the bowl and stem are one piece joined to a base. Dimensions are 3.5" wide and 4.5" high.
I have had no luck finding anything about these. I've seen one other set listed on ebay, but the seller was equally clueless as to their origins. If you know anything, or even have a good guess please let me know.

 

check the 'Cambodia Ware' line by Utility Glass Works; and let us know what you think

Utility Glass, Cambodia-Pink | Replacements, Ltd.

Glass Etch and Pattern Gallery (chataboutdg.com)

 

They might be Tiffin but there is a good Utility Glass Works group on facebook and they will have no problem letting you know https://www.replacements.com/crysta...utm_medium=organic&utm_campaign=shopping_feed

 

That is frustratingly close. The shape of the bowl is similar but not quite right and the company only operated until 1929. The set was given as a wedding present in the later half of the 30's so that date range seems unlikely.

 

Tiffin 15042 Yellow Mandarin. Best guess.

 

angles and shading can affect the interpretation of photos making is difficult to see details... "R" has another UNKNOWN that looks like yours:

UNK1197 Green Low Sherbet by Unknown Manufacturer | Replacements, Ltd.

 

That's it. The shape, size, and pattern are identical. Which means I'm probably doomed to never know where they came from other than a vague "expensive wedding gift from one of the lake people". Anyway, thank you for all the help, even if it turned out to be a great unknown.