I bought a supposedly brand new unopened Agilent 82357B from
nettcy168 on eBay. nettcy168 is located in China.
http://www.ebay.com/itm/261397671097I had offered $118.
The serial number is MY49450765 and the date on the box is 20141016 (which is September 10, 2014).
But according the the Keysight website (thank you
rfeecs for providing the link in post #49), this serial number date back from 2009.
I contacted nettcy168 through eBay. I explained to him that the item I received was
counterfeit.
nettcy168 wanted me to return the counterfeit 82357B to an address in United States (he did not offer to pay for the return) and he claimed he would reimburse me once I would provide him the tracking number.
I pointed to nettcy168 the eBay rule against selling counterfeit item and the fact that eBay does not require to return a counterfeit item (it would make no sense to return a counterfeit item anyway).
One hour later nettcy168 refunded me.
Counterfeiting is illegal. Everybody who bought a counterfeit Agilent 82357B on eBay should open a claim to be fully reimbursed.