Hi Steve
I heard CQD 372 KC only once (5 Feb 2020 0435Z) and its last logging (by anyone) was on 11 Oct 2020, shortly before it was decommissioned. As I recall, its operation was intermittent for the last year before it went dark.
ER 349 KC Was last heard in Feb 2016 and of course, it's long gone now.
No, those 52 stations are not new, just "new" with the BC-453. I have 771 NDBs in my master log (since Dec 2019), and it's unlikely I'll add many more to that. But propagation can be fickle, and there are ships that come into the Gulf with Helipads that have shipboard NDBs....
73 Mark K3MSB