It's at these moments I remember the childhood game "which of these things is not like the other." and realize that we vintage archeologists are all somehow traumatized by that childhood game, then doomed to live out our adulthood this way. There ARE fantastic modern watches, you know? With nothing to fret over, or compare/contrast, and where market values are clear. Instead, with the 176.XXX/cal.104X fascination, we've focused on Omega's most schizophrenic design period, and from that period the product line with the most variants, and where such variants had largely interchangeable parts, and during an era when every watch maker (at Omega or otherwise) was most assuredly smoking weed and swallowing 'ludes.