Posts: 229
Threads: 67
Joined: Jul 2007
The backpiece was changed.
Posts: 37
Threads: 6
Joined: Oct 2013
Hi Edwin,
The calc that without serial number is a warranty replacement unit from HP. I.e. during that period, when ever you return a faulty 41’s to HP, instead of repairing it, HP will replace your faulty unit with the replacement (one with the blank serial number), usually HP will place two metal tags (like those of HP 35) bearing the old serial number (your original serial number) one at the back of the case (just below the blank serial number) and the second tag inside the battery compartment. At times, I have seen hand written number (with an engraving pen) on the blank space which I would presume that they have run-out of the metal tag.
The warranty replacement calc usually from Singapore, however, I have also seen some that made in U.S.A.
Regards,
Y K Wong.