I understand what you say..and correct it's not a sub & as i said above..

Some thinking from my side especially when i compare the Redsubs with the Drsd. Early drsd mk1 & some mk2 had the red over white paint and later all mk3-4 etc seadwellers the red is directly on the dial. So logical these 2 versions in the 200 meter first with 'red over white' should be the early ones and the 200 meter first where the red goes directly would be more the transitional type going from 200/660 to 660/200 dials where red was always directly on the dial....Imho Rolex found a more clean way to print the red visible directly on the dial because the 'experimental' fase of red over white wasn't as nice and looking sometimes quite strange and messy..


Here for instance 'red directly' 200 meter first & a MK2 'red over white'..




and here the mk 3 & 4 directly on the dial..



Rgrds.P