So I managed to get home for a couple of days and pick up my replacement Vass - these were ordered in 42.5, originally sent in 43, and now delivered agin in.....
Bit surprised this happened twice in a row, but the fit of the 42 is actually pretty good. A bit more snug than my 9uk MH71, but G&G recommended sizing down to 8.5 for my next pair so maybe 42 is fine. I'm going to wear them around the house this evening to see and at this point am cautiously optimistic, but still a bit shocked that the replacement for a wrong simple came in a different wrong size.
In other topics, if one wears a 42 in U last, does that take the same size in F? I've got a couple of orders I'm thinking through while the euro is low.
The line to the right of "42" indicates a half size.
Those are 42.5.