Historic books Detective Comics number 27 and Batman number one, expected to fetch $300,000 U.S. dollars each at auction.<br/> <br />Comicconnect.com's COO, Vincent Zurzolo explains what makes them so valuable.<br/> <br />SOUNDBITE: Vincent Zurzolo, COO, comicconnect.com saying (English):<br/> <br />"Anybody can have a Detective 27, anybody can have a Batman number one. But not everyone can have the personal file copy of Bob Kane's. It's pretty amazing."<br/> <br />Detective Comics 27 contains first appearances of the character Batman and Batman number one is the first issue of the Batman series.<br/> <br />They were part of Batman co-creator Bob Kane's personal collection, which is now up for auction.<br/> <br />Zurzolo says another precious item for comic book collectors is a Hulk number one issue, which could also sell for $300,000 U.S. dollars.<br/> <br />SOUNDBITE: Vincent Zurzolo, COO, comicconnect.com saying (English):<br/> <br />"What makes this comic book so valuable is that it is an extremely high grade. It's a 9.2
