Not too sure of the U number but it definately IS different from most of the LAPP's I have seen. Kind of a reddish amber and dark butterscotch colouration with black underglaze ink stamping. To me it looks like a LBM, just 400% bigger! Excellent condition. First mail to me.... $10 + actual shipping. For those wondering what an LBM is....Little Brown Mushroom......like the little psychotropic ones you find in your lawn each spring.