1920-23 Dunhill’s “Shell” (note the plural Dunhill and quotes)
21 Billiard
Made In England
Pat’s Mar.9.15, 134 1418/20

length 4 7/8″
height 1 13/16″
width 1 5/16″

chamber diameter 3/4″
chamber depth 1 17/32″

pipe collection number d19