Can anyone please assist with this 'TUDOR' watch

[APR999]

Dear Forum members,

I was hoping that someone could assist me in identifying this wristwatch that I picked up at a local garage sale.

It's a ladies watch in a 9ct gold case with two hinges and is running well. The case measures about 1.25" across.

It seems to me to be of a style that dates perhaps to the 1920s. The two-tone green and gold dial is unmarked except for a 'SWISS MADE' marking on the base, but the strap, which looks to be original, is marked TUDOR and GENEVE- SUISSE.

The movement is stamped 15 jewels and 3 adjusts.

Any assistance would be greatly appreciated.

Many thanks indeed.