Hi all

Just spied this ladies Omega De Ville 8270 at auction and can't find any direct reference to it in the various ways (Omega Vintage database, Google and so on). I can see a couple of other 8270 variants, but not this particular one. It's got a cal 625 in it and has an additional case number in it of 1011. Movement serial number dates it to 1973. Anyone ever seen it before, any ideas as to which collection (if any) it belongs to? Many thanks.