Just for comparison:
This is a fairly modern P08 9mm sight tool I purchased a while ago. Although the main block seems to have a certain amount of wear and 'age' to it, I don't think this thing is older than say 20 - 25 years.
Note that the top and the handle are not dissimilar to the 'H&K' one. The real giveaway is the interior, modern spring, grease and retaining clip.
Pretty functional, this thing and a good fit. Got my 1906 Dutch sights straightened out using this handy little tool.