Hello,
I don't know if that number is the code or not. I bought a couple for $5 each, and made keys from a table Bosnianbill had in one of his videos. I don't have that particular link, but here's a link that may be helpful?
http://www.lockpicking101.com/viewtopic.php?f=9&t=57138&p=421274&hilit=s%26g+environmental#p421274 I have never seen anyone open one these without cutting a key from one of those codes. I wonder how difficult they would be to pick. Even if that lock doesn't have the code on it, I would still get it. You could cut tryout keys for it. If it is one with three disks, there could only be a maximum of 27 cuts. And you could eliminate the ones with all identical cuts. I would make them out of plastic tubing, and then make a more permanent key.