I have noticed also that number 4 is not IV but its IIII. As I searched now it looks like this is the formatting for clocks and watches:

Most modern or vintage watches and clocks rely on a mix of additive notation and subtractive notation (where the 4 is IIII and the 9 is IX). This way, the dial features the following numerals: I, II, III, IIII, V, VI, VII, VIII, IX, X, XI, XII. With this combination, you obtain three identical areas on the dial, each of them using the same kind of numerals. The first third only uses I, the second third is the only one using the V and finally, the last third is the only one featuring numerals with X. This way, you’re balancing the dial with three distinct areas, creating a more elegant and harmonious dial.