"STUT TWIS"?

[TKH]

I acquired a 12ga lifter, sn 5056 a few months ago. I looked it over pretty carefully before bidding, satisfied that I was adding a nice stub twist hammergun to my accumulation. When I got it home and studied it closer, I found the top rib inscription actually said "STUT TWIS". Deciding it was time for my own copy of 'The Parker Story', I ordered (and received in record time) same. I could find no reference anywhere for "STUT TWIS" in TPS or the FORUM. The barrel flat is marked with a "T" without the crescents. I've formulated some ideas from the extensive info in TPS, but would like to know if anyone else has seen this marking. Those with stub twist Parkers might recheck their top rib inscriptions.