The original 200 + 10000 + 15000 + 500 ATS34 F1 knives were made by Linder in Germany, hence the Solingen marking on the backside of the blade (opposite the M-number). Total F1s made by Linder for Fallkniven should then be 25700 where the first 200 are handmade and with micarta handle.
At one time Linder made a rip-off of the whole shebang. They copied the knife (not hard since they made it in the first place) and the box and everything and sold it as their own. I have not seen any rip-offs and do not know how many they made.
Fallkniven then went to Japan for the VG10 steel and since then the knives are manufactured by (I dont remember the name) in Japan.
in late 2001/early 2002 the convex blade was introduced. First with an all VG10 blade and later with laminated VG10.
It is easy to tell the F1 knives from each other.
If it has a male/iron sign on it it is one of the 200 first. I have not seen any of those.
If it has no markings it will have the M-number and is the first model to the AF. I have some of those.
If it has the big logo it is flatgrind ATS34 or VG10. I have lots of those too.
If it has the small logo it is convex VG10 or laminated VG10. I also have these.
If it has the small logo with Test Series it is one of the 110 F1s with 3G steel (that later appeared in the H1 and WM1). I have two
The Linder ATS34 Custom knife and the ATS34 Superedge 1 looks like the F1 and has the same sheath as the first AF models had.
Early A1 knives could be bought with a cordura sheath with a red A1 sign on the sheath. The logo on the A1 was also red.
Early S1 knives etc etc but yellow.
The cordura sheaths were discontinued because Fallkniven was not happy with the quality. Some rare ones surface on places like Ebay or the swedish equivalent tradera.
All knives were once also available with a kydex sheath. Nowadays only the MC1 and the F2 might come with that sheath.
There are two versions of the F1 kydex sheath. They both had holes but on the early ones they didnt match for the TekLok so one had to drill an extra hole.
The grey plastic airforce sheath is not available to the public except "liberated" from the AF.
There are also two leather sheaths for the H1, one has a small zytel insert and the newer one has a bigger zytel insert almost resembling the AF sheath.
Unfortunately I dont have exact dates for the release of all the knives but a search on those sites that save old pages might give som help.
The S1 however was released on easter 1998 if I dont remember totally wrong, it was easter anyway.