Latin to English Other Religion A reliquary with wax agus dei and pc of wood with word lignum arboris s. p Dominici

I have a reliquary in the form of Crucifix that opens and inside (when unscrewed from the bottom)is a piece of wax and a piece of wood. Across is a piece of paper that read Agus Dei and going down are the words Lignum Aroris S. P. Dominici. I know it's wood from a tree planted by St. Dominic but I was wondering if this could get me the date of the Agnu Dei, which pope consecrated it by being with the piece of wood. These must have been made up in lots. Any Ideas? Thanks