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i was wondering if anyone know's if auction houses keep copies of the origanal c.o.a's that comes with a item that they had sold? here's the deal i bought a autographed reggie jackson 1989 coach's jersey and it came with a c.o.a from the oakland a's and a psa/dna c.o.a as well. does anyone know how these can be replaced, or is it impossible. any help would be appreciated! thank's