Music puzzle

Due to the liquidation of my company - I am selling my personal belongings.

Organic glass Sanctus puzzle - 8 pieces - Music note puzzle in treble clef, bass clef note puzzle, puzzle of tonalities with sharps and flats. The price is indicated for 1 package (8 pieces). Learning music notes at home with parents and children from 3 years of age.
It's easy to draw and color on organic glass with markers and easy to clean with a tissue or cloth, and the pieces are easy to wash and clean.
A long-term investment in a child's musical education.