Bottle of PROMINAL tablets (methylphenobarbitone), half full, inside cardboard carton. Bottle: height 97 mm; width 54 mm; depth 23 mm; overall: height 102 mm; width 58 mm; depth 31 mm; weight 105g. Inscription reads: '100 TABLETS/ PROMINAL/ Trade Mark Brand/ METHYLPHENOBARBITONE/ 3 / grains / POISON S 4/ Manufactured in England by/ BAYER PRODUCTS LTD./ KINGSTON-UPON-THAMES'. Manufactured by Bayer Products Limited, Kingston-upon-Thames, Greater London, England, United Kingdom. English, 1950-1970. Bottle of PROMINAL tablets, inside cardboard carton 1950-1970