I am in the process of purchasing a meters first red sub serial 225xxxx. Not sure if the date wheel is correct as it has closed 6s and 9s. I've seen some posts indicating that the date wheel was a cream color with closed 6s and 9s for the early red subs from the 60s. Is this correct? If it is a service date wheel, is that a big deal for value? Everything else is original including twin lock and dial is pretty perfect with light polishing on case.