The complete set of five etched German silver (copper/nickel/zinc) sheet metal gratings, mounted to white museum board (as issued), all contained in the original wooden box.

2002

all mounts 65 x 52 cm (25 5/8 x 20 1/2 in.)
box 81.5 x 95.5 x 7 cm (32 1/8 x 37 5/8 x 2 3/4 in.)

All signed and numbered 'AP 7/10' in pencil on the labels affixed to the inside of each window mount (an artist's proof set, the edition was 36), published by Edition Schellmann, Munich and New York.