Maikki Karisto and the Tallinn University Institute of History have given me permission to share some photos she took last year of a shawl from Siksälä and specifically its tablet woven border.
This shawl can be found in the Tallinn University Institute of History archaeological collection under the major number AI 5100. It dates to around the 13th-14th century. The tablet weaving is about 1cm in width. It is in Baltic two-hole technique, or Hochdorf technique, depending on how you look at it.