New arrival acquired from @Andy K: Seamaster Yachting chronograph 176.010 with sunburst dark blue dial. I can confirm what the reviews say: despite the interchangeable dials, this model is larger and wears larger than the 176.007 cal 1040 variants. The case has an extra polished bevel as well as a step around the crystal's perimeter adding complexity.
This one has the multi-sided applied hour markers onto which the minute numerals are printed, which Andy calls "flags" on type I dials at his calibre1040 blog.
All together the watch manages to pull off a wonderful 70's vibe without being over-the-top.
I promise to share better pics in the coming days/weeks.