Lego 1015: Letters Large (1982)

A few days ago I found this Lego. A very rare Duplo set of the "Educational & Didactical" theme from 1982.


I don't really know if the set is complete. I found 192 White Duplo Tiles decorated with capital letters pattern:


The tiles are twice as tall in height as the classical Duplo tiles. I think Bricklink references this tiles as Duplo Tiles 2 x 2 x 1 studs.


There's no "Lego" or "Duplo" inscription on tiles, neither a reference number (probably Bricklink reference is 2756pbXXX):


I have not found instructions or inserts but considering the age of the set maybe they have been lost.

The inventory of tiles I found is:

2 White Duplo Tiles 2 x 2 x 1 with capital A pattern
4 White Duplo Tiles 2 x 2 x 1 with capital B pattern
4 White Duplo Tiles 2 x 2 x 1 with capital C pattern
10 White Duplo Tiles 2 x 2 x 1 with capital D pattern
24 White Duplo Tiles 2 x 2 x 1 with capital E pattern
3 White Duplo Tiles 2 x 2 x 1 with capital F pattern
5 White Duplo Tiles 2 x 2 x 1 with capital G pattern
8 White Duplo Tiles 2 x 2 x 1 with capital H pattern
16 White Duplo Tiles 2 x 2 x 1 with capital I pattern
4 White Duplo Tiles 2 x 2 x 1 with capital J pattern
6 White Duplo Tiles 2 x 2 x 1 with capital K pattern
7 White Duplo Tiles 2 x 2 x 1 with capital L pattern
6 White Duplo Tiles 2 x 2 x 1 with capital M pattern
8 White Duplo Tiles 2 x 2 x 1 with capital N pattern
6 White Duplo Tiles 2 x 2 x 1 with capital O pattern
6 White Duplo Tiles 2 x 2 x 1 with capital P pattern
4 White Duplo Tiles 2 x 2 x 1 with capital Q pattern
14 White Duplo Tiles 2 x 2 x 1 with capital R pattern
11 White Duplo Tiles 2 x 2 x 1 with capital S pattern
10 White Duplo Tiles 2 x 2 x 1 with capital T pattern
10 White Duplo Tiles 2 x 2 x 1 with capital U pattern
2 White Duplo Tiles 2 x 2 x 1 with capital V pattern
3 White Duplo Tiles 2 x 2 x 1 with capital W pattern
2 White Duplo Tiles 2 x 2 x 1 with capital X pattern
1 White Duplo Tiles 2 x 2 x 1 with capital Y pattern
2 White Duplo Tiles 2 x 2 x 1 with capital Z pattern
4 White Duplo Tiles 2 x 2 x 1 with capital Ä pattern
2 White Duplo Tiles 2 x 2 x 1 with capital Ö pattern
2 White Duplo Tiles 2 x 2 x 1 with capital Ü pattern