Long shot but may as well ask... I took a risk and bought an Eterna WWW without a movement shot, and it seems there are parts missing from the movement (at least the regulator, end stone, and jewel from the balance cock). So I am looking for either these specific parts, or a donor 520H which has at least these parts present.
Yeap... I'm getting a second hand, a crown, and a stem from him... but he doesn't have the other bits.