Charmalu,
Just use a sharp knife and gut the seal from INSIDE the car then it can be lifted out easily with the chrome moulding intact. ElRojo and I took out an SEC back Glass that way and it was EZPZ. Just make sure you cut all the way around the glass. pull the cut seal inside the car with you, then get outside and lift it out gently. helps to have two people to lift it out. that rear glass cost me 28.00 at the yard at Telfair and Tuxford in Sunland.

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1986 Euro 500SEC "RUF" 9:1CR, "Rose"
1985 Euro 500SEC Cabriolet AMG Widebody
1982 Euro 500SEL "Blue"
2001 Texas Heeler (Aussie/Queensland X) "Sulphie",
2012 Queensland Red Heeler "Squeak"
Best dogs I've ever had.