Type letter (9)

I believe the answer is:

character

I believe this clue is a double definition.

'type' is the first definition.
('character' can be a synonym of 'type')

'letter' is the second definition.
(I've seen this before)

(Other definitions for character that I've seen before include "I, for example" , "Nature; good reputation" , "Letter or number" , "Eccentric person" , "Part" .)

I've seen this clue in The Telegraph.

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