What makes a skeet gun a skeet gun?

[C.O.B.]

In Ed Muderlaks last book he shows a VHE 20 in high condition that he sold as a skeet gun. It's got all the features of a skeet gun and open chokes but it's not marked skeet in/out on the barrel flats. In PA I looked at a very nice VH 20 with all the features of a skeet gun including the markings on the barrel but it is a Del Grego refinish which made me skeptical and there were no ejectors. My VHE 16 skeet gun has chokes of .010 in each barrel, a DHE 12 skeet marked gun had .015 of choke. Parker would do what the customer wanted and if it has all the features of a skeet gun than to me it's a skeet gun. No one seems to question the viability of a trap gun because it's not F/F, skeet guns don't need to be .003 & .005 (the choke of a GHE 12 skeet I have) to be a skeet gun.

I saw the gun in question at the Southern and its a great gun at a fair price.