Abstract: A beverage containment apparatus includes a cylindrical body, a lid, and a splash guard. The body has one or more walls, a sloping lip at an opening on one end, an interior portion of the body, and a base. In some embodiments, the sloped lip forms a circular arc or a parabolic arc. The lid has a closed end and an open end on an opposite side of the closed end. The open end is configured to detachably couple to the body. The splash guard is configured to detachably couple to the interior portion of the body proximate to the sloping lip. The splash guard includes a plurality of apertures spaced around an outer circumference of the splash guard. In some embodiments, the splash guard includes a center aperture sized to fit a user's finger.

Abstract: A silver color coin or medal is produced from a copper-silver alloy containing from about 30 to 60% by weight of silver. The normal rose color caused by the copper in the alloy is removed by selective electrolytic etching.