Non football question.. How much for my K44 RDF

Lost 2 contracts in past year or so, so I may need to sell my K44 RDF plate, bought it few years back as im Cardiff born and bred and I still pronounce it as kaerdiff.
I've tried a couple of online sites to get an idea of how much it's worth but the significance of the plate is lost on them.

I may sell but I would like to know how much people would honestly pay.

Any jerk don't bother saying a £1 as I dont think it would go on the back of a pony.

Many thanks

Not a lot, you would need a bit of imagination to see it as spelling Cardiff!