Sturdy white plastic cashbox used by Seeburg for the SPS160, SPS2, FC2, STD1-4, 100-77D, and 100-78D.

Basically 1973 to 1978. 

Bottom measures 10 3/4" x 6 1/2" and is about 6 1/2" tall.

Top measurements are a little more due to railings.