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See, there really isn't a good answer to this question.
About a month ago I bid for a friend on ebay on a razor like yours, except that it was in like new condition. Somebody else bid few cents more...

Well, you can look on ebay and see what similar razors are currently (or recently) selling for. Of course, ebay is finicky and sometimes the same razors sell for vastly different amounts, but still...

The Puma looks quite nice, but yeah we don't really do appraisals here.
Welcome to SRP though.