1×2 w/ 3-Loudspeakers (Part 3963)
Introduced in LEGO Space sets, this part was "clearly inspired by reaction control system thrusters"¹ even though it was used as loudspeakers in LEGO City sets.
1. Tim Johnson, LEGO Space: 1978-1992 (Dark Horse Books, 2023), page 29.
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A label for this part is included in my LEGO Brick Labels collection.
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Date Added: 2024-02-21 12:00:00
Date Modified: 2024-08-15 09:34:34