A title that featured some excellent Silver Age Marvel reprints and covers, notably the first ever appearance of Iron Man in issue #23.
There is one un-numbered 'S' issue.
As at Dec 2015 all the cover scans are in! Some are proving hard to find for better cover scans. I will keep looking!
May 2019: upgraded cover scans for #41, #77, #79, #82, #85, #111, #142.
May 2019: Sinister Tales #84 is very hot reprinting the first appearance of Iron Man from Tales of Suspense #39. No mention on the cover though.
Note: some PR issues may have no value. Selected issues in FN, VF or VF/NM may not exist in some titles.