i think you have just about all the means to tell in your post, maybe the orange peel effect might be ok on the hand gathers earlier types but the best way i know is to humbly just throw it out there for others to talk about,, you have what others will prolly never have and thats chards from digs, thats a pretty good way of matching up what you have,, btw, that tray is the bomb, ide love to have a tray like that for id'ing,,, i once bought a gel candle at a show once that had cac pieces in it, very cool candle,, good luck on your quest,,bj