Washed-off "Swiss Made" on a vintage Seamaster I'm considering?

Greetings esteemed enthusiasts!

I have a few mechanical watches but am still lacking a nice vintage dress watch. I've been looking for one for quite some time now, and now after the pandemic with all sorts of events back in force, I'm hoping to finally get me a nice vintage dress watch to wear. An Omega, to be specific.

My question is about this particular Seamaster 600 from 1965, mov. 601, ref 135.011. It has had the words T SWISS MADE (and possibly another T), but as apparent from the second photo, there are now only traces left of the word "MADE". The seller admitted as much, though said that he hadn't noticed this before my asking.

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The watch is been sold by a small but to my knowledge, totally legit jewelry&watch store in my country. It doesn't scream redial to my eyes, but what do I know. No photos of the crown in closeup were included.

I'd love to hear your opinions on whether this watch is legit and worth the asking price of closer to a thousand euros/dollars. What might be the cause of the disappearance of the word MADE? And will this effect the price and possible re-sell value of the watch?

Thank you so much in advance!

Davidt - thank you for the response. I guess I'm not hurrying to grab this one. Did you mean to write the mechanism looks damaged, or the dial? And if I may, how can one tell? There's so many intricacies to this vintage watch game...

Oh yes. I thought it was just patina! But there's definitely a scratch near 3 o'clock and maybe one between 4 and 5. The watch is recently serviced so I suppose they are not dust.

The scratches don't bother me visually (at least as seen in the pictures) but I suppose they are a sign that the watch has taken some damage or it's been improperly serviced at some point - which could indicate other troubles, right?
Maybe someone has been working on the dial and got rid of the MADE in the progress...

Gotcha.

I'll think this through. If I do end up making an offer eventually, it'll be in the price range you suggested.

Thank you! I have indeed read those threads once (have been lurking around a bit), they were useful, but will have to study more. I've been learning to recognize redials and have spotted a couple already - steered clear of them.

Yeah I was wondering about the caseback! So they've changed it. Is this enough to make it qualify as a frankenwatch...? 😗 Another strike against this watch or at least a reason to lower offer substantially.

If I may ask about another one? What's your take on the value of this Geneve 135.012 from 1968. mov. 601?
It is not too valuable in my eyes: The case is pretty scratched especially from the back, and there is some apparent damage on the dial rim around 1 o'clock (first picture). I really love the look though, and the watch has allegedly been recently serviced by their watchmaker.