the lugs are bocama, i think, and the construction is very similar to what you'd see in a late 70's early 80's Olmo or Bianchi. Conversely it could be any of a number of smaller builders. Maybe someone will recognize the serial number (it doesn't pattern match with any of my bikes). If you haven't already discovered them, ScotchBrite paint stripper pads (medium and then fine) are the snaz for working with chemical strippers. You only need a few - wear gloves, rinse the pad out when it gets loaded.