Letraset dry transfer (rubdown) letter sheets are long gone (unless you want "vintage" from collectible sellers on Etsy and eBay, and buyer beware: these dried out and lost their "stick" over time). But interesting that there was a time that Pantone (as in the ubiquitous PMS or Pantone Matching System for colors) was either a part of, or partner with, the parent company of Letraset (Esselte Co., Ltd.) and PMS is still going strong. And you can have sheets of dry transfers made to order from many vendors (we used to call them all "Cromatec" cause that was one of the biggest brands) so you could copy original Letraset sheets (in strictly black or white) if you so desired, but could make them in ANY color, now, PMS or otherwise. For outdoor use these need to be clear-coated, they hold up pretty well to sun and weathering but NOT to any abrasion!