collectible

Worthy or suitable for collecting on historical/financial grounds, or for meeting a personal aesthetic.

collectible stamps, collectible china, collectible Beatles memorabilia

With the lifting of his “depression,” he’d developed a new interest, hobbylike in its intensity, in framable and collectible railroad memorabilia, and he could happily have spent the whole day—the whole week!—pursuing it. . .

Rightfully subject to payment.

a collectible bill

That is likely to be paid.

He's owed it to us for six months, but it doesn't look very collectible to me.

An object which someone might want to collect.

Topps[…] has signed the Clique Girlz as commercial spokeswomen for Baby Bottle Pop, one of the Top 10 nonchocolate candy brands.