Another Classe 'M' or Marblehead, designed by Paul Lucas , lives somewhere around Brest.
When we first arrived here in France the house had a central heating system fitted, all the rads were old fashioned cast iron thin column jobs, they needed sandblasting and re furbishing, found a guy locally who agreed to do the refurb his quoted price was on the high side,however when we went to collect I spied some grp hulls, we got talking, he had produced the hulls(he always had an eye to make money. I negotiated a price for the rads and 3 hulls, still got 2 spare, I think the 2 were the first 2 off the moulds, a bit rough but recoverable. He also supplied plans and after finishing the house refurb construction began. Did it at my local club, no english speakers so a little problematic. I followed the instructions initially then seeing easier solutions started doing my own thing. i had lots of finger wagging etc from the french members(they are very tunnel visioned) However they were complementary about the final product.
That is the reason for the name, That'll do thats near enough and the french equivalent, me thumbing my nose at them again.
More photos / info 'en route' eventually.