Hi, Guys. I haven't seen this oil bottle before either. But, I did just Google it. There are records of these specific Sunoco Dynalube glass oil bottles being auctioned as early as 2011, including at a Dan Matthews event several years ago. So, at least this Sunoco bottle didn't just "surface" in the gas/oil collecting hobby.
I'm certainly no "expert", but I think it's possible these Sunoco bottles could be the real deal, given the fired-on graphics technique used.
Finally...what is it that people say about history repeating itself? Below is a link to a 2012 Old Gas thread about these very same Sunoco glass oil bottles. It makes good reading. John
http://www.oldgas.com/forum/ubbthreads.php?ubb=showflat&Number=380898&page=1