Michael Eisenberg, left, insists his “Captain America” motorcycle is the one from the iconic counterculture film “Easy Rider.” Why? Because actor Dan Haggerty, right, says it is. (Genaro Molina / Los Angeles Times)
A letter of authenticity -- signed by actor Dan Haggerty -- for the “Captain America” Harley Davidson that will be auctioned off at Profiles in History in Calabasas on Saturday. (Genaro Molina / Los Angeles Times)
Gordon Granger of Texas says that his version of the Harley-Davidson “Captain America” chopper, which he bought for $63,500 in 1996, is the real deal -- not the one up for auction in Calabasas. (Thomas Meredith / For The Times)
Michael Eisenberg is reflected in the side-view mirror of his “Captain America” chopper. Eisenberg bought the bike in early 2014 from John Parham, a Midwestern motorcycle parts magnate who had purchased the bike from Dan Haggerty 12 years earlier. (Genaro Molina / Los Angeles Times)