BTW, I think a few details are askew in the NYT article. According to the label on the glass case, the display includes the boots from UNFORGIVEN with the spurs from A FISTFUL OF DOLLARS attached to them.
I'm pretty sure the UNFORGIVEN boots are part of The Autry's permanent collection, as I saw Clint's entire outfit from that movie on display when I visited several years ago. My impression is that Frayling coordinated the loan of the FISTFUL spurs, and that somebody hit on the idea of borrowing the boots from elsewhere in the museum.
It's highly unlikely that Clint would be wearing the same boots in FISTFUL and UNFORGIVEN, as those flat-bottomed cowboy boots tend to wear out, and the leather certainly goes bad over time, especially if left untreated. (Boot leather can dry out and develop cracks in the creases. It's happened to mine when they went unused for just a year or so.)
Also, the display includes "the gun grips from RAWHIDE" and what is supposed to be the pistol Clint used in FISTFUL, complete with grips. (This means there are two sets of silver-inlaid "snake grips" in the case, one fitted onto the gun and one unattached.) The pistol is a Colt single action chambered in .357 Magnum, and the card says it was loaded with .38 caliber blanks for the movie.
(FYI: Because a .357 cartridge is simply a longer version of the .38, the .38 round will load and fire just fine in the longer chambers of a .357 revolver. Note, however, a .357 round is too long to fit into a .38 cylinder -- so the two calibers are not fully interchangeable.)
If this is all true, it's pretty funny that Clint, on-screen in movie, boasts pridefully about "My .45...."