Wanted: 21 inch 15Khz (or multi-sync) arcade monitor - UK

[Jimbo]

I'm after a 15Khz (or multi-sync) arcade monitor CRT to replace the one in my existing cab (which I'll be using in my new cab).  I currently have a Hantarex Polo 3, so something similar would be great but must be 21" else it won't fit in my existing cab.  Happy to source from outside the UK if someone abroad has one to sell (depending on price/shipping cost).

I'd prefer multi-sync but can you get one of those at 21" these days?

Thanks