The suitcase

When I moved to Aus I brought a large solid suitcase. It has a combination lock. Since I got here I've used it to store anything private, such as Christmas presents, away from tt. Just before we went to Peru I put some personal stuff in there. I now need to access the stuff. And I've forgotten the combination. BAH!

My options are:
a) Try each possible combination sequentially. After all, there are only 1000
b) Use a scouse key to open the thing

A will take a long time. B will render it useless. Hmm. Dilemma....