By Jill Reilly PUBLISHED: 06:05 EST, 1 June 2012 | UPDATED: 09:28 EST, 1 June 2012 It may have started as a hobby, but one superhero fanatic is set to become a millionaire when he auctions off his prized collection of Marvel comics. Doug Schmell is selling all 682 of his comics hoard, which is thought to be the world's most complete collection and are predicted to fetch a staggering $3million. It includes pristine first editions of The X-Men, Fantastic Four, Daredevil and The Avengers - which introduced Wolverine, Iron Man and Captain America to the world. Money man: Steve Borock (left), Senior Consignment Director at Heritage and Doug Schmell (right), who owns the collection, in front of stacks of his Marvel comics set to net him a cool $3million in Florida
@highlight
Superhero fanatic Doug Schmell is selling all 682 of his prized Marvel comics hoard - which is thought to be the world's most complete collection
@highlight
The mint comics once sold for just 12 cents each
Up for auction: A rare first edition copy of the X-Men, which introduced @placeholder and co to the world, alongside an equally rare first edition copy of the Avengers,  featuring Captain America