SIKU MESSERSCHMITTS V30 There are two versions of the Siku Messerschmitt, the first made in 1954 is easily identified, (if not easily found!), it has a very rounded engine cover.  The headlights also look a little tired and the canopy is more rounded. The early version uses a weight without the top  projection.  I guess Siku were not happy with it and the model changed in 1955 until being deleted in 1963.

Early model from '54 behind.

Canopy is slightly different shape and weight has a longer projection on the later model.

'Tired' headlights on the early model, right

A clearer view of the different shaped dome.