These popular 1 oz silver bars are made by Heraeus in Hanau, Germany. Most are in good condition, but all secondary market bars have potential for wear and toning.
Top of bar reads "Heraeus" above a large "1" and "TROY OUNCE". Purity of ".999+ FINE SILVER" is listed at the bottom.
"Heraeus" is diagonally-oriented and repeated across the back of the bar.