Teppaz Presence portable electrophone

Portable electrophone purchased in 1960 (photo in support). In its original rectangular suitcase with rounded corners, it is in perfect working condition !!!! I plugged it into an extension cord because the old plugs did not fit in my modern socket. Be careful, I have not opened it to see if the lamps are to change. The outer cover is in perfect condition, and so is the interior. Case: 14 cm thick, 37 cm long and 30 cm wide.