This photo was produced prior to 1978 and has no copyright markings. It can be dated by the NBC information on the back of the photo which is shown in the original upload and the photo link above.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
The original description page was here. All following user names refer to en.wikipedia.
Upload date | User | Bytes | Dimensions | Comment
2011-06-13 23:51 (UTC) | We hope | 92964 (bytes) | 574×866 | Photo flaws have been fixed and photo has been cropped. Previous upload was to establish ownership of the image, for dating purposes, and to show there are no copyright marks on it.
2011-06-13 23:49 (UTC) | We hope | 146720 (bytes) | 1539×1000 | {{Information |Article = |Description = Promotional photo of Ernie Kovacs from his 1956 television show. |Author = NBC-TV |Date = June 1956 |Source =[http://cgi.ebay.com/1957-Orig-Press-Photo-Ernie-Kovacs-Television-Star-
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(Original text) : Photo flaws have been fixed and photo has been cropped. Previous upload was to establish ownership of the image, for dating purposes, and to show there are no copyright marks on it.