And the vintage bold autograph is about the best you will find. An early beautiful 'umbrella' signature, "Thomas A. Edison"... Later in life he shortened his autograph to "Thos Edison". Edison's standard signature when replying to autograph requests was an abbreviated "Thos. Edison," so examples such as this are rare and highly desirable by collectors. One of the best we have seen in 30 years collecting. The more rare "Full Signature"