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Date: ~1969.

Calibre of frame does not merit investment in Campag NR or Dura Ace type fittings.

Headset is definitely 26TPI so you are stuck with that.

Shell may be 26TPI. Check width, if 71mm it is 26TPI. If 68mm it should be BSC/ISO.

Rear brake centre too large to top line brake caliper.

If your goal is to build a cycle with the type of fittings you list it would be wiser to employ a different frame.

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