Serial number on a Halda Cicero, a typewriter produced 1953-1957 by Åtvidabergs industrier AB in Sweden. The serial number (7-043128) indicates this specimen was probably produced in 1957.
<a href="//commons.wikimedia.org/wiki/User:Vogler" title="User:Vogler">Vogler</a>
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<span class="int-own-work" lang="en">Own work</span>