A (forged) 340 Crank is Not a (forged) 273/318 Crank?

How many balance holes are drilled in each of your crankshaft counterweights? More than one? I would like to find out if the crank I pictured (see post #24) was only factory balanced or has been re-balanced since then. Thank you.

You're crank in post 24 looks pretty standard to me. One of my cranks has one hole in the throws and some have 3 holes in the throws.