Help with signature please

[cheech]

I found these cups at a sale today. I was hoping someone could help me with the signature. They are dated 1981. Thanks in advance for any and all help.

 

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[JimDon]

Looks like Esther Ruth

 

[Mackaydon]

Maybe Edith Ruth.
Don....

 

[Melissareese]

Maybe Edith Ruth.
Don....

I also think it's Edith Ruth but I'm not sure.

 

[msflower]

I love your blog! I am hoping to see more articles from you in the foreseeable future. Really great!!!

 

[diggummup]

Estaban Prieto. Iridescent glass. Nice glasses