Actually Davis it is 90 days, not 30 days from the time it was lawfully harvested. Don't know how I did that. At one time, the only thing that could be sold was the deer hide but the general assembly had people wanting them to change the law so they did in the late 80s or early 90s. This is the law: section 2312 (c): (iv) The sale or purchase of any inedible part
thereof, from game or wildlife lawfully killed, if such
parts are disposed of by the original owner within 90
days after the close of the season in which the game or
wildlife was taken.
The PGC wasn't in favor of it especially since they had ongoing undercover operations that showed how prevalent and lucrative selling wildlife and parts was.