Norwegian hatched inner surface

Hatched inner surface

Timeless Rarities - www.rarities.no - Last Updated: 09.04.2026

The hatched inner surface mould is the very first unique Norwegian mould, never used in Denmark. It is a retooled version of the blockletter with number mould. Meaning they used the same mould, but made some changes to it. It has the same thin LEGO logo underneath and the same brick types and slot positions. However, they "refurbished" the underside of the brick removing the hatched in number and creating these thin lines on the surface while doing it. Hence the "hatched inner surface" name because of the surface having all the thin hatched lines/stripes.

The mould was introduced around the middle of 1954 and was in use until around 1956, making it one of the longest lasting moulds. This also shows as they are among the most common Norwegian bricks.

By late 1954 all the unique Norwegian colours were out of production. Brown being the last colour to disappear. So hatched inner surface bricks are most commonly found in the basic LEGO colours, red, blue, white and yellow. Trans-clear was first used for this mould, not used for any of the earlier ones.

Maybe due to the long production run there was some colour variation. You can find them in white as well as ice-white, red and a darker red, blue and dark blue, yellow and a orange-yellow.

Brick variations

Here is an overview of what bricks were available in this mould. The short lines crossing the outlines of the bricks are there to identify the slots in the bricks.