| | | | | | Old British Sign Language? (c. 1760–1900) | | | |
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| | | | | | Swedish Sign Language (c. 1800–present) | |
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| | Portuguese Sign Language (c. 1820–present) | | Finnish Sign Language (c. 1850–present) | | | | |
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| | | | | | Finland-Swedish Sign Language (c. 1850–present) | | Eritrean Sign Language (c. 1950–present) |