Regarding US distribution (since you mention Alpha Omega in Boston)...
By: CR : March 9th, 2020-21:28
Wempe and Cellini, both in NYC, were the only US ADs until 2002. Cellini had two former stores (Madison Avenue and their amazing Waldorf location), and Wempe had one store (still at 55th and 5th). So basically all US Lange AD's, as well as all of Lange's ...