Old Russian numbers. Nice retro digits.
Made of metal, seems aluminum.

Number 0 - two pieces;
Number 1 - two pieces;
Number 2 - one piece;
Number 3 - two pieces;
Number 4 - one piece;
Numner 6 or 9 - two pieces;
Number 7 - two pieces;
Number 8 - one piece.

There are 13 digits in total.

Height of the number is 6 cm. (2 3/8 inches).
Total weight is 30 grams.