My lot from the Eric P. Newman Collection Part XI US Coins Signature Auction was supposed to come with an envelope with a notation like "A scarce-to-rare example of the Philip V 8 reales pistareen with cut sides, struck on a screw press". However, it was not shipped to me. If you got it by mistake please contact Heritage. More about this here.
Fortunately, Heritage's Director of Numismatics saw my post and had the catalog team check for it and that's where it was found. Thanks Sarah!