The only other post about Gorin locks is from 2007, and that post didnt go very well:
viewtopic.php?f=8&t=17853We usually hesitate in helping folks pick locks that are used commonly to secure things like bikes, vending machines, cars, safes, etc because we may show you, a locksmith, a nice way of opening it, but then in turn that shows every bike thief with Google search how to do it as well.
I'd start pressing buttons, years are popular, perhaps start at 1900 and go to 2013? That should be pretty quick.
best of luck,
Squelchtone