Set of ashtrays, Wagenfeld, WMF

Wilhelm wagenfeld glass ashtray set for wmf's turmalin collection, 1950-1959. Very beautiful piece of industrial design by a large glassmaker of the twentieth century. The mount is made of silver metal. Some wear but it is rare to find this set in such good condition. The bottom of the ashtrays is stamped "manzinger": most certainly an advertising order.