See that's just brilliant, I love these threads Mike, don't stop by any means! These square waffle dials really do have a striking similarity to the Royal Oak dial design, I prefer these much more than regular waffles.
Seamaster ref 2577 came in different case material and powered by different calibers here's a 18k gold version 351
i've never understood the 2577 references 351, 352 and 354 calibres, as well as SS cases, gold plated, and solid gold. Is there a table or reference chart available to clarify this to the uninformed such as myself? lovely watches by the way! conor