International Signal Code birthday card

Adapted from 'International Code of Signals' (1907), depicting flags and pennants for wishing Happy Birthday across the open sea. 170mm x 120mm (6 3/4" x 4 3/4"). Blank inside. Individually wrapped in a compostable bag with a 120gsm recycled kraft envelope. Printed with vegetable-based inks on a carbon neutral press using responsibly sourced, 300gsm Italian paper.