I recently purchased a garcia mitchell 486 reel I am havingf trouble dating it fron the serial # on the foot. The number is 075255, can someone help me?

Can someone explain to me the 900 series spinning reels? How do the various model numbers size an usage . is there a article on these reels

I am also new to this sight, if you haven't sold these books I be interested in buying them at a fair price. thanks