The bracelet should have please return to curved at the top of the heart, and underneath it should have tiffany & co in the tiffany style font and underneath this it should have new york in capitals .. directly underneath it should then display 925.
on the back of the heart it should have tiffany & co 925 in tiny writing on the right hand side and then on the left it should have t & co in even smaller writing. this is what is on mine and i bought mine from the store in new york
To be sure it should of came in a classic tiffany green box with the little suede pouch to hold it in.