Just had these made in short supply.  There is the curved one for 261 air cleaner lids,  and the straight one for 261 Valve covers.  Might also apply to other engine sizes and years.  Im thinking these are correct from about 1955 thru 1963ish.

They are 15 dollars each(includes shipping in canada).  Specify curved or straight.  curved ones measure 6"   straight ones measure 6.5"

Super nice as all my other decals are,  will last for a long time.  outdoor grade vinyl printed.

PM for details.  CHECK OUT MY OTHER THREAD ABOUT ALL THE REST OF THE DECALS I MADE.  THEY ARE THE MOST ACCURATE AROUND.