- 1Reference: IG6/8/2/261
Title: Intercom No. 261 includes: - new products in the 22.5mm pushbutton range p3 - apology to Otto Wis...
Level of description: item
Date Free Text: June 1979
Production date: From: 1979 To: 1979 - 2Reference: IG6/8/2/203
Title: Intercom no.203
Level of description: item
Date Free Text: March/April 1965
Production date: From: 1965 To: 1965