Former German currency (4)
I believe the answer is:
mark
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">former german currency</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for mark that I've seen before include "[BOOK] of the 26 [BIBLE]" , "Note - evangelist" , "Indicate" , "Matthew, . . . ., Luke and John" , "Indication - notice" .)