That’s why I asked if anyone had ever seen a confirmed factory engraved Newton Rifle. There is one example of a factory engraved Newton Rifle on the NRA Museum website and the engraving while nice doesn’t approach the quality of the engraving on Joe’s rifle. Just saying that if Spittler engraved the Newton Rifle in the NRA Museum he couldn’t have engraved Joe’s rifle.
Another salient point is that an awful lot of Gough’s engraving is executed over stippling.
