The moment you realize that you may have only two 
cels now, but it's not going to end there, you're a 
collector. It follows, therefore, that you have a 
collection, for what is a collector without a 
collection?

And you can always say "here are the two that have 
arrived so far; there are quite a few more on 
order", which seems to be the usual case with cel 
collectors.