Omega Seamaster Heavy Dive 232.30.42.21.01.001 42 mm Black Dial

From 2010, and already discontinued, 232.30.42.21.01.001 is the 42 mm Planet Ocean. This is the mid-size 232-series code, not the 44 mm 215-series. Dial, bezel and movement are not confirmed for this reference, so the year and the 42 mm case are what you can stand on.

Thirteen listings that ship to Saudi Arabia sit on this number. 232.30.42.21.01.003 is the obvious sibling: same 232.30.42.21.01 opening, different ending, and a fully described black-and-orange 600-metre watch. 232.30.42.21.04.001 stays in the 232.30.42 group. 215.30.44.21.01.001 is the 44 mm Planet Ocean. Do not buy a 42 mm Planet Ocean as if that were a single product.