It could be a misdemeanor or a felony based on the dollar value of the stolen article.
Inform the police. Both the pawn shop and the individual selling it can be prosecuted.
Someone is dealing in stolen property by buying or selling property they know to have been obtained unlawfully.
It depends upon the value of the property.
About the same as for the person who initially stole the property. Since you are selling known stolen property, one could face the same charges or more. See: http://pelleylawgroup.com/practice-areas/property-crimes/possession-of-stolen-property/
Criminal penalties are determined by state law, so there may be 50 ways to answer your question. The penalty may also vary depending on whether the recipient knew or should have known the property was stolen.
You get the money for it (if you did it right.) *You can also spend time in Jail for selling stolen property.
A fence or receiver knowingly buys stolen property from criminals for later resale.
The penalty for receiving stolen property is imprisonment for not more than 10 years or a fine of not more than $15,000.00 or 3 times the value of the property purchased, received, possessed, or concealed, whichever is greater, or both an imprisonment and a fine if the property purchased, received, possessed, or concealed has a value of $20,000.00 or more.
It dpends on the law of your state, which you haven't supplied in the question.
You would not be in trouble unless there was reason to believe you knew it was stolen and participated in selling stolen property.
The "original thief." Well, there is a concept in common law that prevents a harmless middle man engaged in a business from being liable if he/she acquires property in good faith and without knowledge of it's theft. Since you obsviously know the item is stolen, you probably shouldn't be asking questions such as this online. However, in most states, if you take property that is stolen and help the thief in selling the item, you are an accessory. You can be held accountable for this.
Possession means that you have the property, chances are you knew it was stolen. Receiving Stolen Property means that you got it and you knew it was stolen. Typically this would be the person that bought it from a thief.