Sam
路Sftorry guys its not a 504.馃槵
I managed to remove the back and found a 561 ( Reference 14393 ) is the crown correct for this 561 ?
Hi peter, I've checked the second reference you've posted (561. 14393) but that watch doesn't have two lines at the top
of the bottom
star.. May be this one is a limited edition
http://www.omegawatches.com/spirit/history/vintage-omegas/vintage-watches-database?ref=14366