Old German coin (7)

I think it could be either:

Which length description are you looking for?:

pfennig

'old german coin' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for pfennig that I've seen before include "Approximately two point two zero five pounds" , "Former German currency unit" , "old rhino" , "foreign coin" , "Hundredth of an old Deutschmark" .)

I've seen this clue in the USA Today, the L.A. Times Daily, The Times, The Guardian, The Chronicle of Higher Education and the Thinks.com.

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