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Type 53/54H was [[introduced in 1958]], along with the [[533]] and [[543]], renamed Type H in 1959, and dropped after 1970.
Type 53/54H was [[introduced in 1958]], along with the [[533]] and [[543]], renamed Type H in 1959, and dropped after 1970.
The turret attenuator was designed by [[Lang Hedrick]]'s group.


{{BeginSpecs}}
{{BeginSpecs}}

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