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David Wise (talk | contribs) m (correct discontinuation year based on price list from 1972 new products catalog) |
David Wise (talk | contribs) m (longest life) |
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The Type T was [[introduced in 1957]] and dropped after 1972, | The Type T was [[introduced in 1957]] and dropped after 1972, | ||
the same as its primary host, the 536. | the same as its primary host, the 536. | ||
[[K]], [[L]], and [[T]] are tied for longest production life, at 16 years. | |||
[[B]], [[D]], and [[G]] are next at 15 years. | |||
==Pictures== | ==Pictures== |
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