.7 % ) and 1.6% ( 1.6 % ) interest , respectively . such options were issued at one time with an exercise price of $ 1349 per share . the exercise price per share was at fair market value on the date of issuance as determined by the board of directors with the assistance of an independent financial advisor performed at the company 2019s request . the fair value of atc south america plan options granted during 2004 were $ 79 per share as determined by using the black-scholes option pricing model