Porcelain identification continues to elude me, especially the uniparts. This one seem odd to me. This is a no-name unipart with the unglazed firing rest on the top. It is 4 inches in diameter and 3.25 inches tall. Second pic shows a poorly trimmed skirt and an unglazed pinhole with a circular impression at the top of the pinhole.
To me it looks like a Pittsburg High Voltage piece, but it does not match up with the U-444 or U-449, unless I got that messed up too.