We would need to know the country you want to telephone Husqvarna in to respond to this question.
Husqvarna makes Husqvarna
No
Husqvarna (a division of Electrolux) operates a number factories in the US. Many of the riders (but not all) are made in Orangeburg, SC.
Husqvarna IF ended in 1971.
AYP Makes Husqvarna and Craftsman tractors
No, Husqvarna is owned by the Husqvarna Group. Electrolux acquired Husqvarna in 1978 and the company was spun off by Electrolux in 2006.
Husqvarna Motorcycles was created in 1903.
The population of Husqvarna AB is 15,000.
Husqvarna AB was created in 1959.
Husqvarna FF was created in 1987.
I did not find a manual but it seems that vendor number belongs to Husqvarna.
It is generally impossible to tell the caliber/gauge of a firearm from just the serial number.