The only 5513's with a MK_ designation for the dial are the maxi dials which came later. Yours appears to be a non-serif dial which is on the cusp of being correct for the year (what's serial first 4 digits?). A little earlier would be a meters first dial.
On the insert, you have an mk4 which must have been replaced at service at some point.
Hope this helps. 5513mattedial.com is a great resource if you want to learn more.
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