Is this 12 bolt worth anything?

[RichSchmidt]

I used to own a 68 Camaro with a 12 bolt in it.It had a posi unit that looked like a coffe can and you couldnt see the internals.I believe it had bolt in axles.It also had GM 5.13 gears.Is this a "service package" rear?I would think if so that it would be worth something to somebody restoring a vintage race car back to as raced condition.The car it was in was a 68 Camaro that was a race car since day one with 425 original miles,and the guy I sold it to backhalfed it with a Dana 60.I may still be able to get the rear out of it.Thanks.