I came across some old Remington ammo in some stuff that was purchased from an estate sale. Best I can tell it is old new stock from a storeowner. It looks to be from the mid sixties as far as I can tell. The boxes are all in great shape and are full. There is a box of 38-40, 244 Remington, 32 Winchester, and two boxes of 303 Savage. There are also several boxes of Winchester-Western shotgun shells. Where could I determine any collectible value and find potential buyers?