Smiths 18 carat Current Collection the watch comes with what

the watch comes with what I believe is the original steel strap

10011 is the unique reference number for this watch and /42 refers to 1942

Smiths produced the automatic in two types of gold cases

There is an excellent article about the Mark 11 watches which gives fascinating context and insight into them here:

Smiths 18 carat Current Collection the watch comes with whatThis is most expensive model that Smiths ever produced it has a large size (35mm) case, made in solid 18 carat gold. In addition to the quality of the case, the movement is significantly enhanced from the standard model there are an additional three jewels (cap jewels on the escape wheel, plus jeweling to the centre wheel on the top plate). These jewels are both intended to enhance the smooth running of the movement, but in addition the hairspring has