Single logo
Timeless Rarities - www.rarities.no - Last Updated: 09.04.2026
Released in late 1955, this was the second unique Norwegian mould. It introduced "hollow studs" for the first time, the holes you can see underneath. The LEGO logo on the underside of this mould was slightly smaller than on the previous moulds.
In 1956 they placed the top of the hollow bricks mould onto the bottom of the single logo mould, creating the double logo mould. So the reason for the "single logo" name is it only having a single logo underneath and not on the top like the double logo bricks.
The 2x4 bricks can be found with and without slots. Possibly making them the first hollow bricks. They are quite rare, so must have been a late change.
Slotted 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.
Colour variations
These are the colours available for this mould in Norway:
Red
Orange/Yellow
Yellow
Blue
White
Trans-clear
Hollow brick variations
They can also be found without slots, but only 2x4 bricks.
Colour variations
These are the colours available for 2x4 bricks without slots:
Orange/Yellow
Blue
White
Print out your own collection overview here: Single logo bricks overview