It is all VG10 and there are two versions of the stamp. First "VG-10" and later on "VG10".
It initially came with the choice of a kydex sheath or a cordura sheath.
A1 Lam VG10
Today the A1 comes in laminated VG10, however it looks the same.
Now you can get the knife with a Zytel sheath or a leather sheath.
A note though. The leather sheath option comes in the box that usually contains the NL-series, and it is WHITE on the inside.
Lam A1 coated
This a zytel sheath for the F1, but the one for A1 looks the same except a bigger opening at the bottom instead of two holes.
There are fakes of the A1 like the F1, and the signs are the same.
The inside of the box is WHITE, not brownish.
There is no bubble wrap inside, nor any paper cover on the blade.
The knife comes in a plastic bag in the sheath.
There are no lamination line.
The zytel sheath looks like a copy of the real one, however the strap has a finer grain.
The Fake A1 does not have a leather sheath option.
I have seen copies of the F1 and A1 with sand coloured handles and sheath on Amazon. The look like Fallkniven but not branded as such.
If you by any chance have a version that I have not pictured or mentioned, feel free to email a picture of it and a description etc.
Read about the F1 here the S1 here and H1 here.