HP-50G case puzzle

[brickviking]

Mine's CNA437nCCC (2014, 37th week and nCCC serial number—not the real one, just number and three letters), and has the HPK-49GPLUS(B). I was wondering how those serial numbers were decoded until this thread was started. The serial number certainly matches the date I bought the calculator (November 2014), though I'm amused that it was a stick-on label, not impressed into the plastic like my 9750G+.

(Post 322)