Here's some info. I found it on eBay from someone who sold a congress from the same era. Sounds about right but I'm not an expert.
"The MSA (aka Northwoods) knives have become very collectible. This beautiful stag Marbles was made in Gladstone, Michigan, stamped '01; now very hard to find when they are "MSA" knives & assembled in Gladstone, MI. The reason is that in 2001, Marble Arms selected Queen Cutlery Company's Schatt & Morgan Division to manufacture components for 6 patterns of pocket knives. After the components were produced, they would be sent to the Marble Arms factory in Gladstone, Michigan for final assembly. The 6 patterns that Marble Arms chose for the first year (2001) of the pocket knife project were: 1. Large Stockman, 2. Large Congress, 3. Doctor's Knife, 4. English Jack Knife, 5. Easy-Open Jack Knife , & 6. Wharncliffe Whittler. The total production of each of the 6 pocket knife patterns was 400; however, the total production of each of the 6 pocket knife patterns with stag handles was only 25. The pocket knives were made with 1095 high-carbon, non-stainless steel blades. The 400 pocket knives of each pattern breaks-down by handle material as follows: 100 Water Buffalo Horn, 100 Jigged-Bone, 100 Imitation Pearl, 25 Stag, 25 Tortoise-Shell Celluloid, 25 Smooth-Bone, And 25 of another celluloid. Marble Arms planned to offer a different group of 6 patterns during each of the following years. However, due to severe financial problems, Marble Arms decided to abandon the pocket knife project after its inaugural year. MSA and Marble's are kind of two different things. Marble's made slipjoint knives until 2001 and then sent them all overseas. They were good prior to 2001 and (as noted) made by Queen. MSA Marble's were made from 2001-2003 (maybe 2004) by Queen for The Custom Shoppe (aka Northwoods Knives) under the watchful eye of Dave Shirley. They were a cut above the USA Marble's--they had Dave Shirley's extra custom touch to them."
