I recently took a trip out to CA and while in LA stopped into a very cool store called Shine Gallery. This place is amazing. Tons of NOS stuff. Just everything. Toys, memorabilia, all kinds of stuff! It is basically one guy's personal collection of stuff that he has been buying for decades. The best part is that he only buys/sells stuff in large quantities. So there are multiples of everything.
Getting to the point... he had a huge collection of vintage NOS motorcycle patches!! I got very excited and purchased my fill. I also felt compelled to share the information with fellow vintage enthusiasts on SOHC4. You can buy anything online.
Honda patches start on "motorcycle patches page 4". But they are all worth checking out. I guarantee these things are NOS. I've seen em in person.
http://www.shinegallery.com/papapa.html