Engravers Bold BT
http://www.myfonts.com/fonts/bitstream/engravers-roman/bold/testdrive.html?s=PRADA&p=72

and

Good Taste Regular
http://www.myfonts.com/fonts/grummedia/good-taste/regular/

as my research says these are good alternatives...but if you have better please advise, attached is prada logo

thanks very very very much!