Help needed to ID a logo on MG belt

[Time Bandit]

The first thing that came into my head when looking at the WaA stamp was WaAB46? I've no idea if it is actually that but that's what I seem to see anyhow?

After looking at it a bit more I'm not so sure about the '6' now? Still think it starts WaAB4 but not so sure of the last one.

[Alan Smith]

I have looked back over my other Gurt 34 belts and, upon reflection, I think that all of the WaA's that I had initially thought were "WaAB" are situations where the "B" is really an "8" or a "6" (but it is hard to tell for sure).

These small markings are really tough to read!