The Certificate of Authenticity will only be for this Kickstarter campaign and will not be available after the funding period has passed.
The Certificate of Authenticity is limited to one per backer and one collector's box per backer. So, if you decided to add 2 or 3 collector's boxes, you will only get one certificate.
No, you have to pledge at least to the $10 tier to do any add-ons.
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