After reading much of Jack O'Connor's writings about his wonderful Eusebio Arizaga 28-gauge, my buddy and I pooled our $s and ordered five Holland & Holland pattern sidelock 20-gauges with straight grip stocks and beavertail forearms, each with a different receiver and lockplate finish. I kept the black finished gun and Wayne kept the coin finished one and we sold the other three to cover our expenses. Problems started almost immediately, broken tumblers, soft sears bending, etc. Wayne's was gone before he left for Viet Nam. Mine shot very well, when it worked, eleven Roosters in fourteen shots during the 1967 season. After its second right tumbler replacement, it flowed down the river of commerce.
Have never seen the need to own another Spanish gun. The Eusebio Arizaga 28-gauge wasn't there when I visited the Jack O'Connor Hunting Heritage & Education Center in Hells Gate State Park in Lewiston, ID.