Chances of you getting one from those batches are pretty slim. They go through batches quickly, all going to different distributors, different stores, different OEMs, etc. So unless you're planning on buying from a retailer that will check that number for you (very unlikely, and if they do, expect to pay a premium for it).
Why do you want one from those batches? They mean nothing other than that was the batch, from a certain wafer/etc, just because one chip from that batch made it to, say, 7GHz doesn't mean they all can.