hi can anyone help me out?

i found a seller of an ETERNA-MATIC 1000 5 star with 2824 movement.
the caseback has the following number: 606.0104.41
dial color is two-tone grayish
is this a real or a fake eternamatic??

thanks in advance for any info on this!

btw, i found a few pictures of a similar watch with a chocolate brown two-tone dial, but this watch had two sets of numbers on the caseback. i'm pretty sure that this eternamatic with chocolate brown dial is an authentic one.