which plug is this ?

[nashkato]

https://www.ebay.at/itm/323830684122
i‘m searching for those plugs .
i‘d need 3-pole male
and one 6-pole female

any keywords that could help me looking ?

 

[Erik2345]

Philips ELA connectors, only made by Philips during the 1930-1960ies.
https://www.radiomuseum.org/r/philips_80_watt_mischpultverstae.htmlhttps://www.radiomuseum.org/r/philips_el6400_el_6400.htmlThe 3 pin male sits on the back of these amps.

 

[nashkato]

yes , that´s the ones .
anybody got a source on those ?