Or ‘Strange Tales’, issue #135, August 1965. The very first App. of Nick Fury as ‘Agent of S.H.I.E.L.D.’ I have it in my collection. (I believe he got his ‘Nick Fury Agent of S.H.I.E.l.D.’ book in 1968 or so, I might be off on that year though. Long time ago huh?!!)
$65 to $1300 depending on shape it’s in.