Hobnail, Fenton, contemporary
These two items sold at the Bob Smith tumbler auction in 2019. The blue Hobnail tumbler on the left sold for $10 and the vaseline opal juice tumbler also brought $10. Photos courtesy of Wroda Auctions.

Here are other items that sold:
Blue opal tumbler, $5
Cranberry tumbler, $5
Honey Amber tumbler, $5
Purple tumbler, $5
Vaseline opal tumbler, $2.50

Updated 7/20/2019