Help with 1839 Seated Half Attribution

Hello Again!
I have a PCGS VG8 1839 No Drapery Seated Half and was wondering if you could help narrow down which WB it is. There is a bulge on the right side of the 9 in date at about 2pm if that helps.
Thanks in advance for your help!
M
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Comments
I’m not into varieties so I can’t help there. However I think that is one superb half dollar. I always like a good circulated cameo.
Bill Bugert's Volume 5 (2016) recently became available as a free PDF download, and it includes 1839 Philadelphia:
http://www.lsccweb.org/BillBugertBooks.php
He describes WB-1 to WB-4 for the No Drapery.
I don't see the reverse die cracks which identify WB-1 and WB-3, which narrows it down by half.
The die lines which identify WB-2 and WB-4 may be difficult to see in this grade.
@yosclimber
Thank you again for the information.
Jim
When a man who is honestly mistaken hears the truth, he will either quit being mistaken or cease to be honest....Abraham Lincoln
Patriotism is supporting your country all the time, and your government when it deserves it.....Mark Twain
I’m going with WB-2 since the reverse is rotated in the proper direction. Fairly obvious once you have something to go on.
This group is so helpful, thanks so much!
Coin on!
M
Thanks for the link, and thanks to Mr Bugert for the reference material!
Love attributing my coins, but my library leaves much to be desired. Appreciate the chance to look at my Seated Halves in a new way....
Love those seated halves. Very addicting series.