Yes, partially. I believe the two line was made by the father and the three line by the son. I've always assumed the 4 line, made in Yugoslavia, was made concurrently with the ones made in Austria, but I suppose it might have been sequentially. The three line is claimed by some to be superior, but I cannot identify a significant difference between them, and I have several of each.
Please note that hones imprinted with "three line" or "the swaty" are not genuine Swatys, but rather are clones made by other companies. Many of them are just as good, but they are not made by the Swaty company.
