The year the bill was printed is on every US currency note. The year will be listed to the lower right of the bust of Andrew Jackson marked as "series" (year)
there is no such thing as being marked with a curse, this is nonsense and fear mongering.
It will be marked.
It will be marked on the barrel.
no
By marked, I gather you mean how is each individual bill identifiable from the others. That is done by a serial number printed twice on each bill.
Should be marked
Gioacchino Rosini is the composer for 'Go Tell Bill'
it depends on the bill
It would have it marked on the front bumper if not you could tell from the manual.
The barrel will be marked "Made in Belgium"
Should be marked on the barrel. If not, take it to a gunsmith.