This mark was used on a very limited number of Mount Washington Glass Company’s Rose Amber products. Virtually none of the labels that were used have survived today.
![Mt. W.G. CO. Rose Amber Pat. Applied For Mark Mt. W.G. CO. Rose Amber Pat. Applied For Mark](http://www.mtwashingtonglass.com/wp-content/uploads/2012/09/mt-washington-glass-mark-17.jpg)
Thank you! -MtWashingtonGlass.com Team
This mark was used on a very limited number of Mount Washington Glass Company’s Rose Amber products. Virtually none of the labels that were used have survived today.