Newly acquired Theoben thumbhole Grand Prix Sirroco in.177. Two owners. First Mr G Taylor who was president of a shooting club in central Scotland. Serial number TB4093. Trying to peace together some information for my own file. Does anyone know what date that would correspond to? Any info to share would be appreciated.

Completely new new to the Theoben Range. Trigger has an almost imperceptible second stage breaking point. Does anyone have annidiota guide to increasing second stage and decreasing first (based on the model of trigger on this particular rifle). Although it arrived in its original box with the original pump there were no instructions!