Early 3oz Engelhard .999+ Fine Silver Poured/Cast Ingot/Bar. Note the low serial number without any letter prefix (i.e. #AC56740), instead it's just numeric. The first digit being a "0" is another indicator this is an earlier example of Engelhard's legendary Cast Bars, as is the "Basic" version of their logo.
This 10 ounce minted silver bar from US based NTR Metals contains pure silver. The bar has a distinctive geometric design on the front, with a recurring diagonal pattern displaying NTR Metals on the reverse.