yes but it wrong, on a clock you would use the modified version of the Roman numerals , I, II, III, IV. because you are not counting, the old version of the Roman Numerals was used to count numbers on a stick. IIIIVIIIIXIIIIVIIIIX one mark for every one, a v mark for every five, usually up side down, and a X mark for every ten. So If you went that way 1= I, 2= II, 3= III, 4= IIII, 5= IIIIV, 6= IIIIVI, 7=IIIIVII, 8= IIIIVIII, 9= IIIIVIIII, 10= IIIIVIIIIX, 11= IIIIVIIIIXI, and 12 would be IIIIVIIIIXII. and to be technically correct Roman numerals only have the bars on top and bottom of the numerals when there multiplying.
the roses were drawn from photo-observation, and the watch was the clients' grandad's (with a few details simplified). There's niggly mistakes in this (and unfinished obviously) but I'll probably draw some similar designs again soon.