A friend of mine just got his hands on this piece. Looks like it's missing a crown , but other than that looks good. I'm having a hard time tracking a reference down. Anyone know off hand. .. Thanks
It's not a particular model name, it's a 1950s US market Longines. In order to know more he needs to have it opened, send the movement serial number to Longines to get an extract of archive. It's a free service.