Is this a ReVox A77 and is it 2 track or 4 track?

[phreaktor]

https://www.ebay.com/itm/153165462776

 

[Blue Shadow]

Looks like an A77 but without a pic of the heads or documentation on the unit it is hard to say the head configuration.

 

[KentTeffeteller]

There's not a good enough photo of the heads to tell which format this machine is, regrettably. This looks to be an A 77 Mark III version.

 

[sixthday]

It misses 2 knobs and the head cover. I would not buy it at this price even if it is fully working