And...historically there are two types of Ford # from KRW. I do not know changeover date, but in Model A-early V8 times the tools had number like the A(BV)306 noted above. That tool could potentially be found as A306 or as ABV306 depending on whether made before 1932 or not. The letters obviously indicate model, also using AA when needed.
These numbers were forged into the tool. At some later time they switched to the Ford root part number, for instance, the 7699 above is the root number for a transmission part, which parts are always in the 7000 group. The letter is a code for the line of vehicles, and seems very non Ford. Many A tools were made after the changeover, and will have the old number forged in the tool and the new stamped!
The part number system was kept after Ford switched to Manzel...Manzel made a few tools equivalent to KRW early Ford ones, but of course mostly focused on the late Model stuff.