The Olympiad lock was Schlage’s first key-in-lever lock introduced in 1983. It was the predecessor to the discontinued D-series lever design which was then replaced by the ND lever design. The main characteristics of this lock were:
The Olympiad lock was discontinued in 1990 when Schlage introduced the D-series chassis design with individual spring cages for each lever.
Pictures below - note the black strip affixed to the inside of each lever.
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