Tested in 2014. This pot was positive for 463 ppm lead when tested with an XRF instrument. Age and maker are unknown. Most vintage enamelware is high lead. The amount of lead that is considered toxic in an item intended for children is 90 ppm lead and higher (90 and up for coatings, 100 and up for substrates.). Vintage dishware is not regulated for total lead content. With most vintage dishware and cooking pots, it is unlikely to have been leach tested. There is really no way (without expensive leach testing that would cost more than the value of the pot) to determine if this is a safe item to use for cooking food.
My #SaferChoice for cookware is stainless steel pots and pans (or plain/ undecorated cast iron.) Here are a few links to good examples available on Amazon*.