The only thing I know about it I just learned from the 21st Ed. of Fjestad's Blue Book.
B-27
FN manufactured modified B-26, imported into the U.S. in 1984. Same action as the Liege/B-26, blued or satin receiver with light engraving, no Browning Arms Co. markings and never cataloged.
Standard Game - 28 in. bbl., blued receiver. 100% = $795
Deluxe Game (Grade II) - 30 inch bbl., better wood and English-scroll engraved satin finished receiver. Chokes are M/F only. 100% = $895
Grand Deluxe Game - 28 inch bbl., game scene engraved, signed by the engraver, 90% receiver coverage. 100% = $1100
City of Liege Commemorative - 250 made to comm. the 1000th anniversary of the city of Liege, cased. 29 imported into the U.S. 100% = $1125
They also made some of the above in trap and skeet models. The pricing is about the same as the regular models.
Nice shotgun. Hope this helps, that was almost all of what was in the book and the Standard Catalog didn't have anything to add. Gotta go - I'm off today and the range opens in less than an hour
John