Narrow down your request please. Rifle ie 10-22, pistol, etc..
Depending on condition.... 250-400
$100-250, depending on condition.
125 or so
125 or so
After doing some research it appears the value of a Ruger Model 1 rifle is between $500-$1000 depending on condition and caliber.
50-500 USD depending on EXACTLY what you have and condition.
Depending on caliber and condition, usually $300-$375. New ones can be found for $425.
The value of ANY firearm is based on the make, model and condition. There are several variants of the Ruger Mk II. Prices could range from $200 to $500.
Ruger has extensive sn on their website. The sn you list is not on it. You will need to call Ruger. 400 or so
I do not believe you have a Ruger, but an RG- Rohm Gemeinschaft. Two very different companies. The RG is generally a low value, low quality firearm that was made in Germany. Value is based on condition, but may be $25-$75.
You are aware that Ruger has made .22 caliber rifles, pistols and revolvers? You have to give information to get information.
Old Model or New Model? It makes a big difference.