Old oriental sword? Is it Marc injured? (8)

I believe the answer is:

scimitar

I'm a little stuck... Click here to teach me more about this clue!

'old oriental sword?' is the definition.
'scimitar' can be an answer for 'sword?' (scimitar is a kind of sword). I am not sure about the 'old oriental' bit.

'is it marc injured?' is the wordplay.
'injured?' indicates an anagram.
'is'+'it'+'marc'='isitmarc'
'isitmarc' is an anagram of 'SCIMITAR'.

Can you help me to learn more?

(Other definitions for scimitar that I've seen before include "Short curved oriental sword" , "This cut" , "Type of sword with curved blade" , "Steel" , "Eastern sword" .)

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

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