Hi. I just bought a 5" 6" Simonds felling saw with perforated lance teeth. The saw is a #541. I was wondering if anyone has any idea of how old this saw is? I have looked all over the internet and can not find any info on a #541 Simonds. I have found info on other Simonds saws but nothing on the #541. The saw is in very good condition and you can still read the Simonds mark. It just needs a good sharpening. Thanks