Sergei Ivanovich Mosin, around 1891.
Yes. Mosin Nagant makes a rifle that is around 40" long and has a folding bayonet. It is called a M44
, The Mosin-Nagant is the issue rifle of Russia/The Soviet Union from about 1891 to about 1945-1946 and was kept as an alternate issue rifle until recently. Regards, Josh Smith Smith-Sights.com
Most of the numbers are the serial number.
7.62x54(R) rimmed rifle ammunition.
Mosin-Nagant firearms get their name from the designers - Sergei Ivanovich Mosin who was a Colonel in the Russian Army and Emile & Leon Nagant who were Belgian weapon designers.
http://7.62x54r.net/ has a huge amount of information on any Mosin Nagant rifle you could ever want.
Some Mausers
The Mosin Nagant M39 is a standard bolt action rifle.
$30 USD or 160 rubles in 1945
This all depends on the who makes the rifle. A WWIIGUNS, Mosin-nagant, made in japan can cost as much as $1400. It is made of wood and metal. If you have one, state the manufacture and what condition it is in to try to asses the value.
It would cost more than the rifle to do, but, yes.