Not exactly sure but on a B (it should be the same) it is on the right side of the left-hand seat mount.
You should be able to get ahold of Farmall and they should have records. Although I am not for sure.
A Farmall A with a serial between 281569 and 300125 was made in 1950. Source: http://www.geocities.com/mck357/serialnumbers.html
fbk-94458
You can check at TractorData.com or link below
On the metal tag on the side of the bell housing.
Check at TractorData.com or link below
You have to compare the serial number to a chart that shows what year it was made.
Proofhouse.com has Winchester serial numbers.
what is the serial number ????
you will find it on the barrel or action of the firearm
Proofhouse.com
I don't think games have serial numbers.