Old two-shilling piece (6)
I believe the answer is:
florin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">old two-shilling piece</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 florin that I've seen before include "Old British (or Dutch) coin" , "old currency" , "Old 2-shilling piece" , "Former British silver coin" , "Old 2-shilling coin" .)