There are in fact four (4) versions of the 1.5 Webra Rekord.
First in 1952 with a blue head and radial mount only.
Second in 1954 with a red head and both radial and beam mounts.......You need to file away part of the radial mount to use the beam mounts. Pic of that one on this thread.
Third in 1959 with a red head and beam mount only. Pic of that one on this thread. It calls it 1956, but that's incorrect.
Fourth one in 1964 with all alloy look......no colour, and beam mount.

Until I just contacted my Swedish friend, a Webra officiando, I did not know of the third version, and it saying it was 1956 confused me, as I have had several of the second version. And great motors they are. I have two in Freeflight models here now that start well and run hard.