This would (might) be a good try from a member who has worked with Acid.
Don't know if this would work on glass, but would be good info if it did.
Some years back I worked with the State Patrol (WA) in recovery of stolen Motor Cycles. The serial numbers on these bikes were ground so far down you could not see it with the naked eye. They poured some kind of acid (Unknown what kind) on the shaved serial number and it poped right out. Better be a throw a way and someone who knows acid, but would be a good try for a brave person.
Don't know if this would work on glass, but would be good info if it did.
Some years back I worked with the State Patrol (WA) in recovery of stolen Motor Cycles. The serial numbers on these bikes were ground so far down you could not see it with the naked eye. They poured some kind of acid (Unknown what kind) on the shaved serial number and it poped right out. Better be a throw a way and someone who knows acid, but would be a good try for a brave person.