You, sir, have a good eye.
There were (at least) seven people associated with the name Beristain involved in the gun trade during the period early 1700s - late 1900s and I have yet to unravel what connections may have existed between them. By the early 1900s we seem to be down to just two Beristains; "Beristain y Cia" and "Beristain, SA".
The two guns linked above are Beristain, SA.
Beristain, SA appears to have been only a retailer and not a gun maker. The gun in GB auction # 473311576 was made by Industrias Ilja (maker mark LI) and has slightly more hours of skilled hand labor in its production than the other gun. The other gun, GB auction # 473994954, was made by Armas Parkemy (maker mark A. P. M.). The LI is an extractor gun; the APM an ejector gun.
To put these guns into the perspective of today’s market, both have more skilled hand labor in them than does a current production AyA No. 2, and if produced today would sell at a higher price point Than a No. 2.
At a thousand dollars, each of these guns is a good value.
