View attachment 267021
Certainly not from the 1970´s! Rather the begining of the 20th century. The number you have to match to the chart is the movement one, not the case one - just in case you showed the case number in order we can check the year of production.
It is one of the 19´´ shape series. We need the size of the watch to tell you more. I guess it could actually be a 19'´ - it is if the movement is about 43 cm. The 19'´ is a nice movement with an interesting history (first watch signed Omega, first keyless watch - see the pic above).
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