Yes this a great website, and thanks for all the efforts and taking time to this great project! I enjoy looking at these pictures!
Back to the OP or content of this Samuel Conrad rifle, one thing I noticed right away was the quality engraving of his signature on the barrel doesn't seem to match the same quality of engravings on the patch box. Its still possible that he may have done the engravings on all the other inlays like toe plate and side plate, if he did then he may have taken more care with his signature.