O’HARA No. .18 CALIFORNIA (OMN)
O'Hara Glass Company LTD, early 1870's
• NOTE: Sid Lethbridge: O'Hara's No. 18 goblet shown in an O'Hara catalog from the mid 1870s. A nappy in the pattern was labeled California in a c1880 catalog. So I would go with O'Hara's No. 18 California aka Arched Grape.