Vintage Meccano Triang game complementary box 1A complete

Vintage Meccano Triang game old complementary box 1A.

The box is complete but there are instructions for boxes 2 and 3 and not for 1A. I don't know if instructions 1A exist because the models that can be made with boxes 1 and 1A are in the first pages of this manual. This notice for boxes 2 and 3 may well be the one that was slipped into this box since this box 1A cannot be used alone.

An original summary sheet of the contents of the Meccano boxes (from number 0 to number 10). is also present.

The box is in very good condition.

There are two small marks of tape on each side of the box and below.

The box is not crushed or torn.

There is still a transparent plastic sheet that is present over the Meccano parts but it has a tear.

Box dimensions: 20.5 cm x 15 cm x 2.7 cm.

This box is unusual.