My concept of my 'collection' is a bit hazy. As my enthusiasm shifts, I am willing to sell/trade some of what I have to pursue other chips. I guess I have my primary collection (which I do not sell/trade), and the rest(which I do).

Sometimes I also pick up a nice chip at a great price, knowing I will likely sell/trade it in the future. But, I usually catalogue/scan it into my collection, so I can manage my chip inventory.

Just my take on things....