Swedish watchmakers TRIWA have teamed up with artist and fellow countryman Erik Bjerkesjö to create two new watches, enigmatically titled No. 1 and No. 2. Adorned with M.C Escher triangles and limited to 300 pieces, the special edition timepieces come in silver and gold with a black organic leather band, made by Swedish tannery Tärnsjö and a tonal stainless steel mesh band respectively. The collaboration is part of the Stockholm Sessions project, more information on which can be found here.