I HAVE ONE MORE RED LETTER DATED 159.. AND 2 YELLOW LETTER WITH DATES BUT I NEED TO DIG EM OUT AND SEE THE DATES ON THEM...[WILL BE POSTING THEM LATER] ALSO HAVE 2 EARLY RED REPLACEMENTS WITH FACTORY PART # ..BUT NO DATES... AFTER 72 OR SO THEY HAD NO PART# OR DATES ON THE OVER THE COUNTER ONES.. DAN