The case model # is 175.0033. I bought it pre-owned from a guy who bought it in Europe when he was on a honeymoon. I thought he told me it was bought in Germany, but that was 25 years ago! This one has the separate D D chronograph module in front of a calibre 3220 A Eta movement. It came with a dog-awful fake lizard strap on it. I added the correct Omega bracelet (all steel because the only two tone model was steel and yellow gold). The original movement was trouble from the start, so I had Omega replace the movement about 5 years ago. It runs like a charm, now.
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