A couple of guys recently received some of these... one was different from the rest: slightly larger ring.. that one was smoked first (& didn't match previous experience), the rest are resting. The remainder had a Feb 05 code... All that to say - where is the best place to confirm box codes?
The best place to confirm a code is your source. Box codes are just as you would imagine...... on the box not on the cigar. Boxes with codes from any year can be filled with fresh cigars (a few are even the same Marca and vitola the older box represents) and because "aged" stock usually commands a higher price or demand than fresh stock they are chosen first. So your source is whom you should question if you suspect the above or even worse........DTIPB syndrome (Dog Turds In Primo Boxes).
This is syndrome is rampant SOTB (South of the Border).
Some of the best vendors have shipped out DTIPB in the past, they make it right when confronted with conclusive evidence something is amiss. That don't happen SOTB or from the contact that someones second cousin knows. I would be especially suspect if one of the cigars was the wrong ring gage or length (slight variances excepted).
Switching contents of legitimate boxes has been happening forever, that's why us old guys will always recommend that you know and trust your source and take a pass on any deal, no matter how good, that you aren't sure of the source.
If it's happened to you consider it tuition learning your hobby, we've all paid some from time to time. Learn from it and most of all be certain of your source.