This is a pathetic story
Did you catch the bottom line of my video, that the recreated dolphins have been made, what looks to me, about 50% larger than the originals? I wrote this up and posted it on the CMH site. If I were in the "Continental Line" and paying over $30K for the restoration, I'd make sure the dolphins were the correct size. But I'm not in that org. and beyond stating the problem in appropriate venues, which I have done, I have no desire to get directly involved in such a transaction.
I'd take issue with at least one thing in the article you linked. It states that most of the surviving French guns that came to the US for use in the Revolution are now owned by the National Park Service. That's not true at all, in my calculation over 90% of them are owned by the
US Army.
The Army thoughtfully leaves most of them outside to corrode in the acid rain which falls just about everywhere in the eastern part of the US. Whether these priceless relics are destroyed by dramatic vandalism as with the pair in Rhode Island, or by
negligence as in the case of the US Army, the end result is the same.