Info on a h and r handy-gun 410?

If you mean the .410 pistol, in the US, these are classed as National Firearms Act weapons (similar to machine guns) and must be registered with the Federal BATFE. They are an "Any Other Weapon" and the registration tax is $5. If already registered, value may be from $500 to $1500, depending on condition. If the barrel is less than 18 inches, and it has not already BEEN registered, it cannot BE registered. As such, it is illegal to possess, and is worthless.