Why the Herons face different ways

On some Choppers the herons face left and on others they face right. It isn't an evil plot and it doesn't signify anything - it's all to do with the manufacturing process. Now read on............................
The chainwheel was stamped out.
Then it went to be polished.
Then it was stamped a second time, to put theactual chainteeth slightly offset from the centre boss.... that offset around the outside?
Before the second stamping the chainwheel was still ambidextorous..... the worker tossed it into the second stamping machine, and depending upon which way up it landed, the herons faced that way..... then it was fixed to the crank, then it went to the platers.
I think facing right is the way it should have been, but it depended upon‹which way up‹the man placed it on the second stamping machine.
( pre 1970 versions of the second stamper had the herons eyes) I have seen same year/model/ bikes with very close frame numbers ( post 73 of course) with herons facing opposite ways.