Soldering coins

[ps_bond]

Defacing coinage in the UK hasn't been an offence for some years. What is still an offence is "breaking up" coinage (after a specific date from memory, need to check). I've not found a clear definition of what constitutes breaking up, however (but it's probably hard to do...).

[pearlescence]

I'm corrected. Just goes to show the value of the £ these days