Masterset 111

Here we see a Siemens Masterset 111 telephone in gray. In some photos we see the OTE logo engraved on the shell with letters in silver and sometimes the colorless logo is embossed. The devices with the engraved logo in silver were used to connect them to end markers (it is also printed on the sticker on the base of the device). In the device with the embossed logo in its initial operation, the shell had the logo of the Siemens company engraved, but after some damage it was replaced by the laboratories of OTE.