SawTroll
Information Collector
If they are, is there a way to determine year of manufacture?
Sorry, I haven't looked into this in some years now - but what I recall is that I never really found a reliable way to "decode" those numbers - or at least not all of them.
Although some of those I have seen looked like they could be decoded in a way resembling that of the Swedish numbers, others did not - ultimately leaving the question open. The relatively low number of observations does of course not help.
There is a chance that the number system used on them varied with time and/or what market the saws were intended for.