Why Won't The Post Office Cancel The Stamps?

reverse engineering of the barcode?
there many a valuable reads on that subject.

While your point is well taken - current practice is current practice - what would we think of stamps that were cancelled with, say, officially-issued & officially-sanctioned sandpaper?

We collectors draw lines all of the time.

Countries in/out, colonies in/out, decades in/out, price levels in/out, et al.

You want to draw the line so pen cancels are 'in'?

Okay, that's fine.

I'll be happy to send you some more to add to your collection.

Cheers,

/s/ ikeyPikey

PS: I once met a license plate collector who lived in a less-well-governed bit of Southwest Asia. He stopped at a printing shop on his way home and, on his way in, noticed a new/expensive car bearing license plates from another nearby jurisdiction. Inside, he saw two local police officers ordering new license plates for their new car. Since they were the police, were the print shop's license plates 'official' and, therefor, collectible?

Happens in Canada a lot. I recently took some ebay sales to the post office, and the young woman behind the counter was thrilled to see the various stamps on the envelopes. She very carefully cancelled every one. Nice to see.

Regarding self adhesive stamps being a deterrent for reuse...again, not here. I recently soaked over $130 worth of uncanceled Canadian stamps, most of them self adhesive. But that's just between you and me!