glass and metal in 7 parts

installation dimensions variable.
smallest: 13.4 x 10.7 x 5.6 cm (5 1/4 x 4 1/4 x 2 1/4 in.); largest: 20.8 x 15.3 x 7.3 cm (8 1/4 x 6 x 2 7/8 in.)

Inscribed 'IV/10' on the underside of number 1. This work is number 4 from an edition of 10.