Personally I think the courts would throw it out. You won't be prosecuted for acting in bad faith or fraud. Same as if the state issued me the wrong tag number for a license plate.(And it has happened.) Do you still have the envelope? Prima facie evidence the state made a clerical error. You might be able to get a CPW officer the validate your license. Call Operation Game Thief 1-877-COLO-OGT or 1-877-265-6648 and explain to them what happened. You might have to meet an CPW officer in the field. Best advice I got, sorry.

http://cpw.state.co.us/aboutus/Pages/OGT.aspx