The face of this iron consists of a thin piece of spring steel riveted in six places to the perimeter the head. In most instances the head is hollow behind the face, as described in a 1902 Golf(NY) review of this club, but an early UK ad for this club described the head as being filled with gutta percha. The US catalogs and ads for this club never mention gutta percha.
Spalding introduced spring-face irons by 1902. This example has its original shaft and its thick original leather-wrap grip. A circular Spalding cleemark was stamped on the back of the head, but most of it has worn off, but enought remains to be identifiable. The club is clean, with no significant dents or wear, and presents well.
For more about Spalding's spring face irons, see TCA2 V2 p415