Pachmayer, at one time advertised, for such work, offering to up-grade Parkers to A-1s and Invincibles, Smiths to Deluxe Grades, and Model 21s to Grand American for $5000 and up. They also upgraded guns to be donated to DU for auction/fund raising purposes. Over the years I have seen a fair number of these guns; some much better done than others, but all have featured outstanding English walnut stocks. Seems that Frank Pachmayer owned and operated his own saw mill; and from his lumbering efforts saved some fabulous blanks to be used personally, and within his company.