The current one I have is an Alfa, like the one in the article.Spanish copy of a S&W revolver. The "Eibar" on the barrel is the place in Spain where they were manufactured. A few different manufacturers made them. Likely 32-20 if 38 won't fit.
Spanish Copies of S&W Revolvers
Around the turn of the 20th century, Smith and Wesson’s flagship K-Frame became big news and big business for the Springfield firm. Innumerable Spanish competgunsmagazine.com