I ordered a set of three in the early '80s (suckered on the short barrel business) while visiting the factory at Eibar. The 12 was the keeper, I liked it alot. Sold the set, as the 20 and 28 were unruly, even after having them balanced at a good shop in London. All were sidelocks. I'd make sure I got double triggers, as their single triggers are notoriously unreliable.

Wish I'd kept the 12...