DAGGER OPINION PLEASE

[Yank]

I don't know if this is the right section for this, but here goes... Well, it seems as though I might have found something else to collect now... A gentleman sent me the following email:

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I have a German WWII Luftwaffe Dress Dagger I am willing to sell. I have attached a pic. It has TIGER and Solingen on the blade. It has an emblem of a Tiger beside the printing. The only real blemish is the tear on the scaboard. It is visible in the pic I sent.

I checked the value several years ago on a German memorabilia website. It was listed then at over $250. A couple of weeks ago, I asked a collector it's value. Without looking at the dagger, he looked it up in some book. Showed me to verify it was correct and told me it was worth between $300 and $500 depending on condition.

You now know everything I know. I am no expert on this stuff. I am not a collector. The dagger was a gift from my father. If you are a collector, I am sure you know much better than me. I am willing to sell it for $400 (midpoint of what I was previously told). If you can convince me that it is worth less, I will consider selling it to you for less. I am not trying to get to anyone, I just want a fair price.
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Should I go for it or run in the other direction? He sent a pic along with his email, and it looks nice (to my untrained eye). I did a little net research and it appears to be an early pattern ('38?) with the black handle. I have ZERO experience with this stuff and I am afraid of fakes. Would anyone like to comment on this? Any good collector site recommendations would also be appreciated. Thanks!