May 14 (Reuters) - Salvatore Ferragamo SpA :
* Shares fall 4 percent in early trade on Thursday
* The Florentine shoemaker reported on Wednesday a 16 percent rise in first-quarter core profit as currency effects boosted sales in Asia and North America.
* First-quarter sales rose 2 percent at constant currencies and same-store sales stagnated. Further company coverage: (Reporting by Milan Newsroom)