Description BLONDIE - HEART OF GLASS / HEART OF GLASS (INSTRUMENTAL). DISCO VERSION. CHRYSALIS DISCO SLEEVE. STEREO. USA Pressing on the Chrysalis Label. Cat No: CDS 2275 Released 1978. Side 1: Vinyl: Graded as EX. The label is clean with spidering. The matrix no is A. Side 2: Vinyl: Graded as EX. The label is clean with spidering. The matrix no is B. The sleeve is undamaged and graded as EX- (mild edge wear). I am happy to combine postage costs for multiple purchases. All items are carefully packaged in proper record mailers with stiffeners. I will post overseas.