I'd check the cost through PSA's dual authentication service. I recently sent in an autographed Ryan/Kidman rookie and it cost about $30, although I think Mantle is probably a bit more. Like you, I knew the card and the autos were real (I sent it to signings), but it gave me a bit of peace of mind having it spanned. My kid or dog could chew on it now and it likely wouldn't get ruined.
Edited to add: if you do send, I would get a number grade for both the card and the auto. I don't think it costs anymore and the cards and autos are in great shape.
Last edited by Bestdj777; 04-27-2017 at 07:38 AM.
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