And what barrels have the rib inscription backwards and all the way forward of the fore end?

The word "Titanic" is both a scriptic and fontish anomaly - the leading 'T' teeters on the cattywampus and the ending 'C' could as well be read as a 'G' or even a numeral 6. Definitely of dubious lineage in terms of execution of engraving and linear placement on the rib.

The photos show the same sleeve joint. Behind the forend. The rib legend is not in front of the forend.

Pictures 3 and 19 are a top view and side view of the joint. The left rear section of the forend appears in picture 19….. IMHO :-)

I think the giveaway was the legend. Only way to view it right-side-up, is with the muzzle to the left.

#3 and #9 are the same joint. I agree with Kevin, the inscription is too far forward. Be careful buying Parkers from a black gun and Mossburg seller. I can't see where this crook says anything about sleeving. He describes the barrels as Titanic steel.