Value of Mopar 8 3/4 center section with 4.56 gears ?

I've got a 8 3/4 center section, that has 4.56 and is posi unit. The case number is #2 742. it also has the large yoke for the big u-joints. It's been stored in a cabinet for 13 years. No longer need it. But can use the cash it will generate. So . what's a good working used 8 3/4 #2 case 4.56 posi worth ?