[sdiy]Is it a dual square transistor ? ;)

[m.bareille at free.fr]

Hello,

I have recently grabbed this part into a 40 or 50 years old special/strange
mixing desk  from the ORTF (the french BBC). This part have 6 legs and a square
shape , tagged CM241 made by RTC/SIS (?) and was  used by 2 into each tracks of
this mixer in combination with tiny Schlumberger (audio) transformers...

I have opened  one and here is a picture of what i found inside of the box ...
>From your opinion , what is it ? I have not yet tested it with the
multimeter/diode checker, neither have schematics of this mixer or modules ..

The picture is on my web site here: http://m.bareille.free.fr/CM241.JPG

Thanks,

Marc B.