A taiko musuba (square knot), 2 part Nagoya type obi. Known as a tsukuri obi, tsuke obi or easy obi.
Pre-shaped rear knot, so no complex tying
Obi should not be washed
Made and bought in Japan
 
Condition:
Very Good condition - some inconspicuous marks which do not detract from the obi - see photos

Measurements:
Obi are one-size-fits-all items