NOTE: Julian Rogers 2021: This is a caster set whose base is silvered glass. The set was patented by AE Young (No 35799) of Dorchester, Massachusetts on July 1, 1862 and was created by Boston Silver Glass Co. in both 5 and 6 bottle sets. The earliest patent date is for the caster and an additional patent date is seen on the holder for the bottles themselves.
NOTE: ZZ UNIDENTIFIED No. 923 is a very similar set.