Ball bearing from TR6?

[Brian Kemp <bk13@earthlink.net>]

I pulled the engine and transmission from my TR6 and have them
separated.  While cleaning up afterwards, I found a single ball bearing
about 3/16" in diameter on the floor (by the transmission, near the
engine).

Can anyone give me some idea if they may have come from the TR6?  I
swept the floor before I started, but the bearing could have been kicked
out from something around the edge of the garage or from my neighbors
side (shared garage) during the removals.

Thanks,

Brian Kemp
72 TR6