@LaCointessa Out-gassing from the wood could be a definite concern. So could the effects of the adhesives that are used to bond the plywood. I'd keep a very close eye on your coins. Check them regularly.
Looks to be big for a SDB. I'd pick the ones that are near and dear to you and place them in an SDB. I would hide the rest somehow to prevent temptation from the unknown.
@LaCointessa. If you have a good enough reason maybe the moderators will delete your photos. Or, if you can still edit your post, delete them and post this ?