Good spotting!
Actually I read the number as 1461 maU, but I admit I did not check to see if that matched. I went back and checked and I'm still not sure, but I believe you could be right.
You are right about 1 thing; I only bid on it because it included the box so maybe it's a very good thing my over-the-top bid did not win. I'll have to be more careful.
Once before I got a vintage box with the wrong number, probably a mistake made at the dealer rather that after the fact, but it certainly can happen honestly or otherwise, and maybe right from the start not only later.
We neeed more catalogs...