bro, i have been in the sports auto. collecotrs world for over 20 years, and hollywood....sorry to say, but this is very fake... i will just give you one telltale sign,,, and they were done by the same forger.... all the sig. bodies are very close in size... spacing of each is also very close...(each letter),, for 6 different people to sign and get all 6 to be so similar it syle is well.... a very very long shot.....and i am looking at a pic at it from about 4 feet away...also i seen a few reral posters, and ford signed on his shirt.... why not this time.. this type of stuff becomes habit... when they sign the same pic or poster they tend to stay in the same area....and lots of times the signee signs where their photo is... they have big ego's.... .....and the poster looks fake,, alot of posters are printed with a roller... it just keeps rolling as the paper feeds... this look stamped..it could have been legit stamped..some print differently.....but there are lots of bright spots to dull on there...... i hope i am dead wrong buddy...could be the glass reflection,,,, and also $600 is a joke.. legit its worth $1,500-2,000 on a real poster.. maybe more in the right auction...i would send this to psa/jsa autnentication in cali....