German engraver is sterner, giving nichts away? (5)

I believe the answer is:

durer

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

I cannot understand how the remainder of the clue works.

(Other definitions for durer that I've seen before include "Albrecht -, fifteenth to sixteenth century German artist" , "Old master" , "Albrecht --, German painter/engraver" , "Albrecht --, German engraver/painter" , "Albrecht -, C15-16 German artist" .)

I've seen this clue in the Sydney Morning Herald.

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