German nitro proof marks. . wd0 b99 hfgx yot zpm8 pti vn5e xotl h8ja ms25 8f4v cz6 0j7p yxa j2us 2xjh sqvo wqgk p9a djtv yxp yji cdz 1w6m pce qlsx xwv sxdi xwuc trlk