Looks like a nicely repainted Competition with Capella lugs.
Be wary too. Their ad copy makes it quite clear that they're less interested in accepting offers and more interested in using offers as a valuation tool.
Vintage Raleigh for best offer? The owner of this collectable bike passed away, so I don't know anything about the history. I mostly need help identifying it's age and value. Ultimately I will sell it, so will entertain offers from collectors. Serial # 1A5867
Could prove to be a very difficult seller to work with.
-Kurt