Never say never my friend.
Over the years I have been astonished at some of the incredibly rare finds I have had in collecting (in general). Treasures I never though I would ever see outside of a book let alone have the opportunity to own. Like a 1912 Royal Navy magazine pouch for my Webley MkI self-loading pistol. Only know of one other example!
Patience is our friend and it makes life so much more excited when that elusive treasure appears after years of searching. Keep the faith and keep your eyes peeled, who knows what is around the next corner...
Cheers, Roy.