A gentleman's 9ct. white and yellow gold square Rolex wristwatch, the fifteen-jewel movement signed 'Rolex Ultra Prima', timed six positions for all climates, the rear cover engraved 'R.W.C. Limited', with Glasgow import marks for 1928, No. 55907/912, the black dial with baton markers and subsidiary seconds, the yellow gold bezel with white gold surround and scrolling lugs.