Precision at the highest. Originally a chopsticks maker, now they also make some of the best wooden rulers and other stationary such as pen case. They even have a boutique in Paris!
Huge fan of vintages especially the 139, but I don't have any. Indeed a hard job to find vintages in very good original condition. A lot of luck is needed here. My humble approach is to get good modern interpretation (homage) of the historical pieces.
Also nibs from older limited editions write better than the current ones nib my very personal opinion. I feel more comfortable resistance (on the paper) when writing.