It would not be financially wise to lift it from the cover because it is not worth even the cost of doing that (I charge $10. to lift a stamp + $5. for ID (no cert.) plus return shipping, so the lowest you could get away with is $16./18. (if you wanted insurance). And by the way, as far as I know, APS will no longer lift stamps from cover. I think I am the only service that will.
But on the other hand, you could also go to my website at
www.stampexpertizing.com and read the article "How to lift stamps from covers" (click onto "Articles" and you will see your choices) and then try it yourself! A 495 line pair, used philatelically like this is probably worth about what revcollector said.