Just arrived from Italy - Seamaster 'Pilot Line' 166.0087 with 39mm case, in literally NOS condition, with original NOS 1171 bracelet. I think it is 0087 ? - The back has never, ever, been removed, - That will be done by my Watchmaker this Weekend. Bought, & stored for 40 years. - Worn a handful of times, by the original owner. Perfect timekeeping, & a glorious unmarked dial, in a very deep navy blue, shifting to light blue, depending the the angle of the specular light.