You are bidding on a Holley Model 2300 two-barrel carburetor, stamped P/N # 7508-1, date code 0265.  This is a replacement carburetor for many Ford 289-302-351 & 390 V-8's with Ford-type throttle arm, an automatic trans kickdown lever, and automatic choke.  This is a small carburetor, probably rated at 350CFM.  It is used; nothing is seized, looks great but I didn't hear this one run so it will probably need a rebuild for best results.  Sold as a core for professional rebuild or for parts.  Shipping is FREE for USA 48 states ONLY.