This is education model which was used in Bulgarian high schools in 1940's and later.

It is wooden box with glass on the front.

It was used to learn students in school lessons.

This one is about silk and BOMBYX MORI LARVAE worms.

Heavily used, please look at the photos.

Good for decoration, or restoration project.

Unique, very hard to find similar at that age.

Lot of sign of times, which give it additional charm.

Real "old school" product.

Dimensions:

25cm x 37cm x 5cm

10" x 14.4" x 2"

Worldwide shipping with tracking number.