Found some vintage Rolex ads online that suggest the Sub was significantly less than $400.A sub was about four hundred dollars and I'd guess the omega would be within ten per cent of that.
This historical Rolex price list suggests a no date Sub retailed for $230 USD circa 1970.
Minus4Plus6.com - Rolex Price Evolution for Rolex Watches
Is there a similar online resource that contains historical Omega pricing?
I found this old Omega brochure online that appears to be circa 1969. The prices aren't in USD, but rather Swiss Francs. It appears a no date SM300 retailed for 380 Swiss Francs circa 1969? Unclear what it would have retailed for in the U.S. in 1969 however. Thoughts on what the no date SM300 would have retailed for in 1969 in the U.S.?
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I'm not sure that a straight currency exhange From Francs circa 1969 would accurately reflect the retail price Omega set for the US market. The SM300 was $180 in 1959. Hard to believe it would have been 50% less in 1969.It looks like 1 US$ was worth 4.37 CHF in 1969. That means that the SM300 would have cost less than US$ 90 when the Rolex Sub was priced at US$ 230.