Marantz SD 156 Dual Stereo Cassette Tape Deck 

This Marantz deck has been tested, the heads are clean, and it works very well.  The audio sounds clean on both sides.

The case has some wear and marks, but nothing is broken or cracked. 

Somewhat unusual, it has the two input and output cables already attached, going inside the unit.

It measures 16 1/2" x 11" x 5".