I have two different photo's sent to me as well with identical signatures. Compared them to known secretarials and appear to be no good. However, I have not seen, for sure, good Eastwood signatures from 15-20 years ago. Everything we see authenticated by PSA is newer.
Im going to add a but though. If you go to page two at the bottom I posted a case study. The C looks good like his older stuff and you said its from the 80's. The only thing is his is typically more squished and he seemed to spell out clint more so than his secretaries... SO :P
Permalink Reply by JXE on October 10, 2013 at 6:35pm
This is classic secretarial. Check out the isitreal.com entry for examples of secretarial signature and (much more rare) authentic full signatures from that time period.