Need help figuring '69 Targa seal version.

[midlife]

I am wanting to replace the Targa windshield frame seal on my '69. Some catalogs list a different seal for -6/69 and 7/69-.
My serial # is 119111163 which from Bruce Anderson's shows it to be 1969 911T Targa number 1163. Does anyone know if this is early or late?
Or another approach, is there obvious distiguishing differences between the early and late seals?

Thanks

[midlife]

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