Maybe this belongs with specialty bottlings.
A couple of days ago I cleaned out some old stock Booker's. The last few bottlings have all been very close to the 6 year end of the 6-8 year range for this bourbon, and I've found them a little lesser in quality than previous editions.
At any rate, I snagged two bottles with identical batch numbers but different information. Both were B95-C-31. The first bottle was listed as 7 yrs, 3 mos and 126.6 proof. The second was 8 yrs, 5 months and 126.8 proof.
So I've long thought the Booker's batch number was the most meaningful of the batch numbers Beam puts on its products. But these are clearly from two different batches, despite the identical number.
It occurs to me that since batch numbers seem to mostly refer to a bottling run, there could be two batches bottled at the same time at different ages and proofs. Or, there could have been a couple of single barrels that worked their way into the pipeline in 2002-2003. Other thoughts as to why this might be?