These two, elegantly-designed stemmed communion cups are of a form once thought to be American, but now  to believed to be English-export items made by the Bristol firm of Robert Bush & Co., dating from the late 18th- or early 19th centuries.  They are identical to others that, together with a triple-domed spire flagon whose lid conforms to the cups, were once part of the ecclesiastical furniture of the Horsemeadow Congregational Church in North Haverhill, N. H. and now housed at the New Hampshire Historical Society.   Excellent condition.  Height 8 7/8", base diameter 4 3/8".  [Cf. Hornsby, Pewter of the Western World, item 193, p. 94.