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Now that is a pretty rare bird. The inscription on back says "in Recognition" and it is likely to be "A. Schob" a printing company in Zurich. It does mention 1955 on the case back but it probably sat in a shop window for a while and was eventually purchased. I believe that It pre-dates the Polarouter. Probably a 1953-1954. This is the reference that eventually gave rise to the Polarouter and Polerouter. Definitely a good one to add to any UG collection ! Dibbs ...