lordlister
You can observe a lot by just watching
I recently read a comment on another board that the poster just picked up a box of 2 year old opus x. They said that they determined this age from the box code. I never heard of a box code for opus x before. I have seen stamps insie the boxes, such as P5, but I'm not sure what they mean. Does anyone know if these codes do exist, and if so, how do you decipher the age from the codes?