I am sure from what you have already posted that anyone reading these exchanges could pinpoint the items you are concerned about. And although as regards coins "I (wouldn't) know a hawk from a handsaw" even I can see that all those 10+ coins sold in the last 2 months have exactly the same fault as you described - and really, they look nowhere near as good as the other similar coins which I assume are correct. Makes you wonder what people who are buying them are thinking  - or are those sales for real??? It would seem that in the last couple of days the sales of the 1934/35 Centenary Florins has been changed to a private listing - so that bidders' ID are not shown. Hmmm.