Thanks Nathaniel, there was an old post where I discussed these previously and posted pictures from a vendor at Chattu Chak market who specializes in these (but the search feature has defeated me yet again). I picked up one from Lung Phra Derm along with the hardback book that details the amulets and priest knifes of that particular monk (and mine was in the book). I became an instant celebrity with the wife's relatives in country