Using both deep grooves and waffle scoring, the highly visual face on this mashie was designed to provide increased backspin. The combo face design of this club makes it the rarest of the Burke Rotary irons. This example is made out of Monel metal, which has a high nickel content (67%) but does not use any iron. As such the clubs are non-magnetic and never rust. A beautiful example! TCA2 V1 p252, 276