I have a 1970 DR-7 that I am needing to sell. The paper label has come out, but I discovered an interesting marking where the label should have been and where they later burned in the "Made in ...." It reads 47.6.21 My guess (and that's all it is) is that, perhaps before putting on the label with a serial number(which is useless for dating Sigmas)they did put on a production mark, in this case 6/21 #47. If that were the case, this would be a fairly early guitar since they began introducing them in Spring 1970. It has the zeroth fret and the original adjustable bridge. I would rate this in very good condition (9/10) with no repairs or damage. E-mail me for pics or with an offer @ knoxsteinbach@juno.com. Thanks. I may put this up on EBay if I don't get any response this week.
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