Scott 38 — 30¢ 1860. Legit?

It would depend on whether the reperferation made it a different Scott number or not. If it did, then it is not genuine. But if it only took a straight edge and changed it, then the stamp is still genuine, but altered.

Here's your (semi-) daily dose of altered #38s. This patient was one of two discussed right here on SC:

http://goscf.com/t/72893&whichpage=10#649054


[edited to provide a more accurate link to the SC post]

Here's the other example of a faux-bottom-frameline stamp that was posted about previously on SC:
http://goscf.com/t/72893&whichpage=18#672503

This one has an interesting story, in that the OP got a good cert from the PSAG and then a bad cert from the PF, as discussed in the above-linked thread. Both certs are pictured there too.

It wasn't hard to trace the seller, whom I recently contacted to see if it was still available for sale (I explained the backstory and said I was interested in it specifically because it did have a bad cert). He wrote back and said "it's gone." :(

The comparison images are of items from my collection. Perforation sliced into the top part of the stamp, so I'm using the die proof as a reference to highlight the ding in the upper LHC.