Early Danish clones are particularly
interesting because they mimic, not the later Lego of the Patent
Pending era, but rather the early Lego Mursten.
One of these attained export
status and was sold abroad under the brand "DIPLOM" (at
least in Switzerland) and "LINO Method" in the USA. In
Scandinavia it was sold under the trade name "PUWI".
The bricks are compared with
LEGO in Figure 1, far down. They interlock perfectly with LEGO and
actually provide an excellent positive hold. Note the ejector
pin marks, similar to those of 2X3vs01c,
suggesting the mold may have been manufactured by one of the suppliers
Early bricks had no underside
connectors, as shows the illustration used on a tube pack acquired
from Switzerland (see image left, noting the bricks seen from beneath).
This illustration may be from 1958, but the system is probably earlier,
as shown by the permanence of the slot fixtures.