Wanted: 42.5" x13.5' x 17" +/- spare tire

Looking for a spare tire for my Comanche. I'm running 42.5 x 13.5" x 17" Boggers. But would be interested in anything from a 40" to 44" to get me by, thread depth is not important but tire should hold air. I'm definitely not looking for a new tire, something well worn and cheep would be best. Location is Southern NH and I am planning on being at the NAC Roctoberfest at Field & Forest on Oct 12th -15th.