Herter imported these Sauer & Sohn German revolvers from the 1960s to the early 1980s. The Herter PowerMag signature
caliber is the .401 Power Mag (similar ballistics to the .41 Magnum but was introduced nearly 3 years earlier). The same style of gun was also made in .357 and .44 Magnum.
Hawes imported a similar design for a short time, as the "Chief Marshal" model. There are varieties in the grip frame shape and
size, including a version with angled rear corner (think "bobtailed" 1911). Because of these production variations, make sure
you either compare the dimensions carefully before ordering, or better, send an accurate pencil tracing of your existing grips. Just remove them from gun, place them on 3 x 5 index cards, trace the outline of each, mark the screw hole location, and
mail them with your order number written on them. I can match them to the correct version even if you order the wrong one. If
you order a grip with a pattern that isn't available in the size that fits your gun, I'll let you know and find out whether you
would be interested in the one that actually fits, even if it is smooth rather than staghorn, or if you would rather cancel the order.
Without the tracing, all I can do is send the model you order and it's up to you whether it is the right one for your gun. The
model and caliber do not determine the proper grip. Only the tracing or your comparision of measurements can do that.