There are 2 different Mossberg 151's- the 151M (wood goes all the way to the muzzle) and the 151K (wood does not go all the way to the muzzle, but stops with a rounded bump- called a Schnabel) There is collector interest in both, the 151M is usually worth a few dollars more. Value will depend on condition and completeness (rear sights and Mossberg sling swivels are pricey to replace if missing) Value may range from $125 to $250 for a minty specimen.
there is no listing for a 251c long rifle in the mossberg section of the 30 edition blue book of gun values. the latest one on the market .
$269 new retail price.
These were made in .22 long rifle caliber. Value always depends on condition. $50 for shootable to $200 new
Western Field 48A was made for Montgomery Wards by Mossberg. The model 48A is a Mossberg 45B .22 caliber Long Rifle
50-150
10-1000 USD depending on exactly what you have.
0-300 usd
Grain generally refers to weight- of bullets and gunpowder. The Mossberg 45B was a caliber .22 Long Rifle firearm. .22 LR is tpically a 40 grain bullet weight cartridge.
about 100.00
25-100 USD
There are dozens of different models of the Mossberg 22 rifle. You did not tell us which model, and we need that to give you an answer. Sorry.
Depending on condition, anywhere from $50 to $200 for a 152 in new-in-box condition.