Is a mahogany box safe to store slabbed coins in? http://www.mintproducts.com/index.asp?PageAction=VIEWPROD&ProdID=1044
Iwoud try not to place aby coin in an aromatic environment, but if I had to. it would be a slabbed coin. In any case, aromatic or not, I's put in a few "dry packets." Clinker
Mahogany is the only wood there is that is recommended for use with coins. Best is not to use wood at all, but if you are set on using wood - mahogany is it.