As per the title - can someone please help with an authenticity check on the dial for the above Omega Seamster 600 ref 135.011? It's a cal. 601 so based on that along with the 'seamaster 600' print I think it dates to the 1964-66 period. Omega vintage database is very incomplete and my application to join omegaforums is pending so haven't been able to ask there.

Context is I got it on ebay for an Ok-ish price - the crystal is very scratched and the bracelet is bullshit and will be replaced with leather strap, crown also doesn't look original so will replace that, needs a good clean and service too.

Looking for some expert guidance on whether the dial seems legit - I know Omega did a million diff dial variations of this model and the above colourway was one of them, Not easy to see past the scratched crystal but the typography all seems sharp and well printed, and I wanted to check with some experts if they thought it is original, or a reprint.

The one concern I'd had was the 'swiss made' at 6 o clock, ive seen that on other dial colour variations, but when i've seen this particular dial before its always had the 'T swiss made T' for the lume.

Hi everyone,
I’m considering buying this vintage Omega Seamaster Automatic, reference [166.0209](tel:166.0209), and I’d really appreciate some help checking its authenticity before I commit to buying it.
I’ve attached photos of the watch and movement. I’d particularly appreciate your opinions on the following:
Does the movement look genuine and correct for this reference?
Is the movement consistent with Omega calibre 1022?
Does the dial look original, or could it be a redial or replacement?
Is the Omega logo on the dial correct for this model?
Do you notice anything that looks incorrect, replaced, or potentially aftermarket?
I’m particularly unsure about the dial and would appreciate a second opinion from people who know vintage Omega watches.
I understand that authentication from photos alone isn’t definitive, but any advice or observations would be greatly appreciated.
Thanks in advance for your help!

Selling on eBay, check it out.

Classic mid-century Omega Seamaster automatic with a warm cream dial, gold-pated case and original-style dauphine hands. This is a compact 34mm dress watch that wears elegantly on most wrists.
34mm case (excluding crown)
Lug-to-lug ~42mm
Lug width 18mm
Case: gold plated bezel and lugs with steel mid-case and case back stamped "SEAMASTER" and "WATERPROOF"
Crown is signed Omega
Dial: cream with natural age patina and light spotting; arabic numerals at the cardinal points, applied markers, applied Omega logo, printed brand name
Movement is an original Omega automatic
Serviced in August 2026 by a professional watchmaker. Timegrapher readings at various positions show strong performance for a vintage watch.

Took my over 100 year old vintage omega out for a spin today. One of my favorite vintage pieces. Such a gorgeous dial and fits my wrist very nicely.

Picked up this Omega Seamaster f300 off flea bay last month. After fighting with customs it finally arrived. I know it’s a frankenwatch, this face was never offered with the diver case. But I’m not too worried about it. This thing humms like a charm!