And the upshot of all this, well the mechanics @ Liége were weapons makers to the world is Best how to phrase it. From the 18th Century, and possibly prior, the Belgians were supplying rough barrels to the Brits, French, Germans, Russians, etc. 20k platforms a month was an estimate. Now I have not seen in print that the Ferlach mechanics were recipients, but probability is heavy in favour of it. The Liége mechanics adamantly resisted centralized or organized proof, but then again there was National Pride locally as well as at the top. I am sure the jobbers/handlers, as well as end users, of the rough tubes, etc. also pushed back against centralized and organized proof as no one wanted the Truth to get out that the end platform was actually from cobbled together components from the Continent. The retailers wanted to mask the actual construction. Liége was unequivocally a victim of economic prejudice, but the mechanics really didn't seem to care if they could sell their wares. And one hears all these War Stories of how a mechanic took raw Earth , which he dug with his own hands, as well as a crucible and fashioned all the components platform. Pure Rubbish...... And as is that a maker totally made a platform in-house.
So 2 takeaways here: There was always masking of components, as I am sure there is today, to prevent the end user of having knowledge that an item was cobbled together and Proof Marks have a time varying definition.
Hochachtungsvoll,
Raimey
rse