Were you expecting a later Tech to not be very mild? If you can measure the thickness of the bottom plate we could tell if it is an earlier model (1967-70) or post 1970. Another sign is to look for date code on the bottom plate. If you have the pre-1970 plastic handle, it is not the mildest one.
No, I was just surprised at how mild it was (the light handle probably doesn't help and makes it feel milder as well). It's a made in England, no date code base plate which I believe puts it as a pre-1970 model.