The IRO is a razor coming from Spanish Basque. It is often confused with Eibar, yet Eibar is the Basque city this razor is coming from. Head and handle have a Logo stating "Original" with an arrow through it, IRO, and the handle also has "Systema Oblicuo" which means slanted system which is about right.
The razors head is an ordinary, OC head, that can fit on all M5 handles to use as an ordinary head. The interesting thing about this razor is the handle. It is bent near the end, where it ends in a plate with two holes. One fits over a guiding post, one over the center screw, and a special "nut" is then used to fix the razor. In essence, most other razor heads can be used on this handle. See pics for illustration of how it works.
The Systema Oblicuo was patented 1935-12-16, Spanish patent ES4292.
The razors head is an ordinary, OC head, that can fit on all M5 handles to use as an ordinary head. The interesting thing about this razor is the handle. It is bent near the end, where it ends in a plate with two holes. One fits over a guiding post, one over the center screw, and a special "nut" is then used to fix the razor. In essence, most other razor heads can be used on this handle. See pics for illustration of how it works.
The Systema Oblicuo was patented 1935-12-16, Spanish patent ES4292.