Advice on cash transactions in the public sphere

PolarityMan

Brush up on your cockney rhyming slang.

midlifecrisis

I always wear a jacket and tie and call myself Mr Black and insist the other party calls themselves Mr Pink, and conducrt the transaction with "stuck in the middle with you" playing in the background.

octatonic

Get tattooed and gain 40lbs- no one will fuck with you.

bodhi

I sold a Custom Shop SG once in front of a Zone 4 station at around 10PM.

Had to take a cab and recognised the driver as we used them quite a lot at the time.  Told him what was up and jokingly asked for backup if it all went wrong.

When we stopped at the station, he got out, opened the boot, got out his wheel spanner.

Seller turns up, nice bloke, no problem at all.  But from the corner of my eye I could see my backup ready to pounce should the need arise.