1) Collector 
• (n.) One who picks or chooses; esp., an inspector who selects wares suitable for market.
Cull'er noun One who picks or chooses; esp., an inspector who selects wares suitable for market. 
culler 1. Someone who selects, or chooses, from a group to reduce or to control the size, or quality of (as a herd) by removal (as by hunting) of especially weaker animals. 2. Anyone who picks or chooses; especially, an inspector who selects wares suitable for marketing.