Only after Parker was moved by their new owners to Ilion, NY did they stamp a "repair code" on the gun. Parker records may have documentation of the additional barrels if the work was done at Meriden prior to 1919.
Harry- the "big 20" does handle very well and got me 3 banded ducks last Sat. using Federal Tungsten Polymer 3" Magnum loads 1 1/4 oz of #6 @ 1185 fps through .029/.029 chokes.
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