I recently received a Seiko SBCA001, and upon learning that its now discontinued, asked for suggestions as to what would be most similar. It turned out that there was very little in that niche, and nothing nice.
So my suggestion for a Smiths would be
*Oystery 37-40mm case, all brushed
*Oyster bracelet, ditto
*10atm
*quartz movement
*black dial, black date wheel
*nicely lumed numerals
*nicely lumed sword hands
Hoping my Seiko will last until that's released....