Phil,look at the page in the Chipguide and the NB is exactly the same as the NWB except mine has the W in it. No difference what so ever.I'm not arguing just stating what I see.The lettering and the chip and even the denomination are identical,I'm not saying it is from there but could be.I've read articles that say they were partners until sold to the other, hence the NB being together.Please take a closer look at the Chipguide picture under Club Harlem and you'll see the N and the B are the same,I've taken my chip and held them side by side and the lettering and so on is identical,just saying not forcing the issue.So please take a closer look,thank you,Torrey