Ah, I mean what you see!
If you're after revealing items, a shell is a necessity. I was misunderstanding your need for a pound to use with the Raven... I thought you wanted to just plain vanish a coin!
And talking of price, a guy I know at my local garage can shell a coin in less than a minute on a machine lathe... and he's done them for me for no charge in the past. If you can find a machine shop, it's well worth asking them there. Putting a metal shim in is quite easy to do yourself, you just need some thin steel sheet which can be cut with scissors and superglued in.
I'm always after a bargain, and although the coins I've had done are not up to Gibson's standard, they work fine. And cost less.
But that's obviously only if you've got a friendly machine shop locally
