Letter from London - Another Ravenscroft Goblet?

Title: 
Letter from London - Another Ravenscroft Goblet?
Author/Artist: 
Stuart, James.
Published In: 
Antiques, XCII, No. 6, December 1967, p. 770, ill.
Bib ID: 
AI84938
Notes: 
Recently acquired by the Ulster Museum, Belfast.