1960s Triumph Motorcycle Banner

Description

1960s Triumph Motorcycles Roll Up Banner.  I have attempted to do some research on this banner before listing it.  I feel it is a rare piece of Triumph motorcycle history and welcome any information anyone might have, so I might add it to the listing.  I so far have found this much out from a Triumph motorcycle Facebook group and searching many times on the internet.  I have not been able to find this banner anywhere on the net.  However, I was sent a picture of a larger banner that was very similar but was larger than mine (or at least it appeared to be).  The rider pictured I believe is the legendary Triumph racer Gary Nixon on his #9 bike.  I was told it dates to 1966-67.  What they did not answer is the "reverse"#11 in the lower right right area or the printed "RENNIE" as seen in the pics at the bottom right.
The banner is stapled to a wooden dowel rod and measures approximately 33 inches by 33 inches.  I purchased it from a man who told me he got it from a tire shop that had displayed it for many, many years.  It seems to be a canvas type of material and shows signs of age.  You can see this more on the back side of it (see pics).
My belief is this is a rare piece of Triumph history.  I believe this is the reason I can not find anything like it on the internet.
I am not a Triumph or motorcycle owner but love the artwork.  It could have been a print given to motorcycle shops or parts stores.  It is not new by any means but has a great patina to it.  The one pic that was sent by the Triumph group member looked pristine.  He never said if it was original or if he owned it but did date mine for me.
This is about all the information I can provide.  The banner is sold in "as is"condition and will likely be shipped in a cardboard tube rolled up.  It would make a great piece to frame for the Triumph, motorcycle, racing, or art enthusiast.
Thanks for looking.  Bid with confidence that you will receive the pictured item as I have 100% positive feedback over many years selling many different items on eBay.