All (4) are Hobby-Town of Boston Kit #OH-100 - Ortner Style - Quick Discharge Hopper - Early Type - Ortner's Style (FEC) Rapid Discharge 100 Ton Hopper Car
(2) kits are unopened in original package (still shop sealed - stapled), includes original instruction sheet, original wheel and truck set "National - Timken, HO Scale-RP-25 Wheels, Needle Point Bearings, Smooth Rolling, Non-Magnetic" #T-327B - Dan Gilgore Designs Plantations, FLA
(2) kits have been opened, each kit appears complete, with instruction sheet and trucks with wheels