Manufacturers: Jackson China, Mayer China, Walker China
User: Colony Club
Date of Jackson plate: 1972
Date of Mayer demi cup: 1992
Date of Walker plate: 1966
Notes: Founded in 1903 in New York City, the elite Colony Club is the only social club created for women only.
The ID was made based on a photo of the flag that flies outside of the club's building that clearly shows the same deep blue logo.
The logo is a pair of interlocked, blue shaded Cs in a serif font, backwards and forwards. Keyword: rwcnCC
Sources:
Wikipedia
Big Apple Secrets
Jackson China photos, courtesy of Andrew W H Campbell; Walker China photos courtesy of Jesse James Schroeder; Mayer China photos courtesy of Susan Phillips
Flag photo courtesy of Yelena Linetskaya, Big Apple Secrets