Quote:
I disagree with that definition. If that is the agreed upon definition, then all vending machine coils, sewing machine perfs, and bisects, amongst other items, by definition can never be sound.
So you, revenuecollector, picked up on the problem of general definitions such as sound. It actually varies by what is being looked upon. So a stamp cut in half is sound (bisect) but that is usually on if on cover or piece; Holes punched by someone to ease coil stamp separations is okay and remain sound as long as the correct action, machine, company did the hole punching, as to needle or pin holes done for separation of stamps-- that is fine -- but a pin hole from placing a stamp on a sales board is not still sound, right?
I again point out that the OP asks a question without understanding the nuances of what the question entails.
I believe the reason Siegel has not defined the term "sound" in their definitions is for the very reason that what it can mean changes by item considered.
Edit; I forgot to ask that if used stamps, meaning properly and normally cancelled stamp done in an accepted and normal manner do they remain sound? What about the normal and regular method of cancelling certain revenue stamps via hole punch or cut cancels?
Another question about sound stamps, do they remain sound when the scratch and sniff aroma has faded? Likewise how do one check to see if the aroma is faded without scratching the stamp surface? Does the scratching of scratch and sniff stamps render them no longer sound? {I love the Swiss' chocolate aroma stamps printed as a large chocolate bar with individual segments (stamps) though it is not the only such scratch and sniff issued}