Sorry, my fault, it should be 337.
My normal US size is 7.5 D, but in Allen edmonds last 5, I do go US 7. I got message in this thread that the last 348 is more elongated than any other lasts, and someone who owned C&J shoes suggested to size down 1.5 for normal US size. So I need further informations.
Thx for all above suggestion .