Lagopus, two strains of browns were introduced into the U.S. waters in the late 19th Century. The Loch Leven as you noted, but in addition, the"von Behr" strain from Germany.

Left to right: The eponymous Hardy Perfect, first produced in 1891, 3 1/8", 3 3/8" and 2 7/8". Note the ball bearings.
English guns have nothing over the quality of the old Hardy reels. Tight Lines, Gil