Sold my Dinar a couple of years ago - buyer now wants a receipt

[sponners]

Hi guys, I haven't been on here for a while.

I bought in to dinar about 2005 and ended up selling it all off a couple of years ago.

One guy bought £1k off me.
Today out of the blue he called me asking if I could supply
him a receipt.
He is trying to cash it in (he didn't say which bank) and the bank is saying they also need proof of purchase in order to exchange for him.

I'm a bit cautious about this (should I be?)

Anyone know of a bank that he can just walk in and exchange with no issues?

I purchased all mine through Amer.

Thanks.

[Will-it-happen?]

I posted mine to warka last year in a post tube

All my dinars were credited OK and I wasn't charged

The downside is that I can't withdraw any!!!!