What tonearm is this?

[GECO]

I've got this arm on a deck but got no idea what it is. looks very much like the mission 774. possibly a Jelco OEM?
it is Japanese made and the after some fiddling setting up it sounded very good.
also I got no idea what cartridge this is. but also, very good sound,

 

[firehorse]

 

[GECO]

 

[ghostinthemachine]

 

[GECO]

 

[Prince]

 

[placebo]

 

[placebo]

 

[GECO]

 

[GECO]

 

[placebo]

 

[GECO]

 

[placebo]

 

[GECO]

 

[chipwelder]

 

[Analogos]

 

[Analogos]

 

[croak]

 

[Analogos]

 

[croak]