If you use vetted dealers like Legacy Collectables (Toms site) or Pre98 (Scotty Benedict) You will get what you pay for. They also will guarantee guns are what they are supposed to be. They also post many pictures at different angles too of each gun they have for sale.
I cannot speak for Pre98 but as for Legacy there have been many examples from this dealer that have turned out to be questionable if not outright boosted. I would say the majority of their items are correct but there have been examples that where clearly not right and they were aware of it and did not bother to mention the issues when describing for sale. I do not know how or by whom you can call any dealer "vetted" as this is a business for them. When they acquire or get stuck with a boosted item they will try to pass it on at a profit if they can.
This Eagle/F stamp may appear slightly off location, the stamp used may also be slightly larger than a correct stamp. A close up would help. The low serial number is the biggest tell. If this has been refinished it appears well done. look how the muzzle appears to have some high edge wear.
Regards,
