Some Mosser collies were made for and sold by Rosso glass. Technically, these are Mosser collies, as they use the Mosser molds, however they were not sold by Mosser or listed in the Mosser Glass catalogs. Some were special customer orders. These are new pieces, some made after Mosser themselves stopped producing the collies. They have the “M” on the left side, none of them have the “M” on the bottom.
Mosser Collie for Rosso Glass – Airbrushed with sand carved bats
Known colors include:
Royal Plum Opalescent (all)
(New) Amber, Amber Satin, Amber Carnival
(New) Green, Green Satin, Green Carnival
Pumpkin – aka Orange Marble and Orange Marble Satin (similar to the 80’s Pumpkin but brighter – made in 2018 or 2019)
Dandelion and Dandelion Satin (light yellow -2020)
Anything with sand-carved decoration (Sand carving is a Rosso specialty – they have produced decorated sand carved pieces for other glassmakers including Fenton.)
Possibly airbrushed and mixed finish collies (seldom seen)
And there are probably more
Pumpkin / Orange Marble:
Both Pumpkin and Dandelion contain cadmium and are UV reactive.