Woohoo!

Thanks Bitt! With your help I've found out that this unit probably isn't a Philips, but a VDO, at least that's what this link on the Dension site mentions. (here's the adapter link)

All the Philips headunits mentioned in the link I provided in my previous post seem to be Tape headunits. (though that 22DC279/62 is also branded as a Philips -and not VDO- on that Russian site you've linked me to)

Or do Philips and VDO have a joint venture for headunits ?

We're halfway! Thanks a lot BItt !!