[David Noble]

Here is my contribution to this discussion, especially on barrel length.
I found this several years ago at a very reasonable price and remember thinking it was such an odd configuration for a SKEET GUN that it was undoubtedly one of the Del Grego upgrades.
I decided recently to request a letter on it and was surprised to learn that it actually IS a real SKEET GUN. The serial number and Remington code place it's production in 1937 where it stayed in the Meriden warehouse until being moved to the Remington factory in 1939 and apparently it was still there around the time Remington stopped Parker production in 1942. I guess the fact that Parker and Remington only made 28 16ga GHE SKEET GUNS shows that they weren't hot sellers.
Only about 13% of all the SKEET GUNS made in all gauges (1098) had 28" barrels so it's probably safe to say less than 2 or 3 were made in that length in GHE 16 ga.
This gun also has the manual safety feature.