La Perle sponsored successful pro teams in the post WWII era, up until at least 1957. They reported went bankrupt around this time. Hugo Koblet won the 1951 Tour de France on a La Perle and Jacques Anquetil rode for them in 1954 & 1955. It's hard to say whether this is a good frame or not. I'd want to know the seat post diameter, to determine the grade of tubing, before I made an offer.