The spare bearings I have are alternatively marked as 6903 and 61903.
Thanks for that. As you say... easy to find bearings and the same size Phil BB's use. The funny thing about a Phil BB is the axle is completely smooth, it's quite easy to move the axle left/right just by tapping the ends if it. There's nothing holding the bearings from moving along the axle. It appears the TA isn't like this, which I prefer.
http://pardo.net/pardo/bike/pic/fail...ePhilWood2.jpg
I only wish I didn't have to buy yet another tool. These "one more's" add up to a tool chest !