Hobby Easy, Hobby Search and HLJ all carry ROCHM.
3-ton and 2.5-ton types are similar to this 5-ton but smaller.
Ver.F = PFAFF 5-ton
Ver.E = HADEF 5-ton
Ver.D = PFAFF 5-ton (DIN 7356)
Hi Yotsuya !
Your E and F jack are not very common ! OK they have the plate that proves the capacity.
I’m puzzled by the version D which has the typical 3-ton pattern, but has a 5ton capacity plate ! Looking at my typical 3ton jacks, I found one 3ton plate was overmarked 5ton. So maybe late in the war the germans decided the 3ton capacity can go for 5ton.