I have found the belt buckles from the films and have them available buckle only if you would like. PM me if interested.
Here is what I have found in my extensive research on the straps:
The origianal Raiders strap was a 1 inch unbeveled 8/9 oz. strap with edge grooves that were almost completely worn down from view by the costume department so that the grooves are only visible on the bottom of the strap toward the bag rings. The buckle was military issue standard Eastern European leather rifle sling slider buckle which was flat and polished.
The rest of the straps were beveled (-1/16th") and a 7/8 oz. leather therefore needed a smaller buckle. The buckle they chose was a 7/8" English bridle buckle with a roller which are very hard to find in the US. I believe Keppler has them pretty spot on. I will have some shortly as well. In the LC and KOTCS the buckle was given a slight bend outward.
The difference in the belts are that the Raiders belt was a 1 1/2" width with dark brown leather, attached whip holder, metal keeper, and ten holes punched to the end cut.
The TOD belt was a dark brown leather 1 3/4" belt with leather keeper and a shorter end cut with 7 holes.
The LC belt was a lighter brown leather but still a 1 3/4" belt similar to the TOD but with a longer end cut and again 7 holes.
The KOTCS belt is a 1 1/2" lighter brown belt with leather keeper and extra long hang. Indy wears it on the first of the 7 holes and backward position to the other films.
Here is an excellent screen shot showing all of the KOTCS gear:
![Image](http://i27.photobucket.com/albums/c151/wadesongs/IndysGearKOTCS.jpg)