CH 1990 Stamp Day Horgen ZH, cover cancelled 30.11.-2.12.90 8810 Horgen with PJ set with add-on cancellation Zimmerberg

Switzerland 1990 Stamp Day Horgen ZH,
official cover "Journée du Timbre - 1990 - VSPHV - Tag der Briefmarke - Giornata del Francobollo - Bergwerkverwaltung Käpfnach b/Zürich",
with add-on cancellation "10 Jahre Philatelisten-Verein Zimmerberg, Horgen",
with Pro Juventute set, registered mail cancelled "30.11.-2.12.90 8810 Horgen - Tag der Briefmarke - Bergwerk Käpfnach",
backside arrival cancellation "3.12.90 8708 Männedorf", luxury conservation.