The urgency of the seller's desire to sell the CB radio, the unexplained reason for the seller failing to have an accompanying antenna for the unit, the common knowledge that stolen CB radios are frequently trafficked and that when his own automobile was being repaired he had removed the radio for fear someone else would steal it infers knowledge from the circumstances which should excite the suspicions of an ordinarily prudent man in the purchase of property which has recently been stolen. See Bryant v. State, 139 Ga. App. 313 (1) ( 228 S.E.2d 344). Unexplained possession of recently stolen goods can be used in conjunction with other evidence to infer guilty knowledge. The evidence here was sufficient to sustain the conviction, and neither the general grounds of the motion for new trial nor defendant's motion for directed verdict is meritorious.