To a serious AC collector I think these are some of Atlantic City's "RAREST" $25 chips:

Brighton $25 - Value $1,800 to $2,000

Resorts International First Issue $25 - Value $2,500 to $2,800

Resorts International Second Issue $25 - Value $2,000 to $2,500

David, with all due respect to you, you must get a copy of "Black's Catalog" as soon as possible (even an older issue). That book is a must for all serious collectors of Atlantic City chips. It contains a plethora of information on Atlantic City gaming history and materials.