hi everyone! i have a question regarding speedy locks, are they all made the same? I noticed that there are numbers but can you open a lock with a diff number than your key? and plus will they all tarnish just the same no matter what you do? Here's the deal, I am a bit apprehensive about leaving the lock in my speedies ever since I experienced oxidation of the very first mono speedy 25's lock and keys... It left some trail on the vachetta... anyway, i have removed it since then and also the one in my damier 30. thing is, the keys in my new azur 25 are hanging on a closed padlock, i think hk buyers prefer it to be hanging this way and i do admit that it looks kind of cute. but now im getting scared that it will oxidize and leave a stain on the leather again. is there a way for me to open the padlock with the other locks keys? or i dont have a choice anymore? thanks in advance!!!