Thanks, at first they looked the same as stalks offered by MK Holztechnik but on closer inspection they are different.

MK Holztechnik stalk


The slightly nicer Morganpark stalk


Translated I'm getting this from the Morganpark website....

The focus during development was to achieve a really elegant and filigree solution. As a result, the wiper interval switch function had to be omitted. However, this can be installed separately as a retrofit part. We think you can safely do without that in a Morgan. The detents ("click-click") of the rotary switch between light: off/parking light/low beam and wiper: off/1/2/3 are not as pronounced as with the plastic switch, you just need a little more feeling here. However, practice has shown that you get used to it very quickly.

The knobs for the light and wiper are also made of stainless steel with central knurling for better grip and the ends are polished. We are preparing a version with wooden knobs.

Price per unit: € 395 incl. 19% VAT plus deposit/old part
examples

We provide detailed instructions for installing the complete unit. With a little skill, the steering column switch unit can be fitted in around 20-30 minutes. We need about 3 days to convert the unit sent to us. In individual cases we can deliver a finished part in exchange. There are no separate costs if it works perfectly, but we charge a deposit of €100.00. If you register in advance, we will change the unit in about 15 minutes.
Accessories

Which is even more expensive than the € 340 MK Holztechnik option, and in both cases there's going to be an additional cost to get the intermittent wipe function back, probably involving an additional switch by the sound of it. I'd love to replace my plastic stalks with something nicer, but the cost does seem rather prohibitive.

Pehaps an alternative could be to vacuum metallise the existing plastic stalks....

https://dual-metallising.co.uk/chrome-effect-on-plastic/

https://www.vmclimited.co.uk/

Or chrome spraying them

http://www.chromespray.co.uk/

They would probably end up being a bit too shiny though, a brushed chrome or aluminium vacuum metallised finish would work better

There are many options.....

Maybe worth experimenting with hydro-dipping ? https://youtu.be/11jB45cZCkw

II have got the Morgan Park stalks in my 2006 4/4. They work fine.
But I used a different solution for the interval wiper function which could be used on all Morgan with the Landrover stalks. The difference between the three speeds was not really significant in my eyes. So I bypassed the contacts for the "speed switch" in the stalks and mounted a VW 99 relay. The VW 99 relay is "programmable" and you can have any wiper interval you like. The VW part number is 357955531. "Programming" is very easy. You turn the wipe on and immeaditly out again and then you wait until the screen has enough water on it. Then you turn the wiper on again. That will be your interval. If it is to fast or slow you can repeat the procedure with a new interval. Very easy.

Good solution, thanks for sharing