Evening, how does the vintage micarta Buck scales compare in durability to the later Birch handles and then to modern day Dymalux Rosewood handles? Is the micarta the most water proof and environment resistant? Any chance of any of those handle materials shrinking over time or with use? Also, on the Brass vs stainless steel bolster 503- are they solid and part of frame similar to 110, able to be drilled and tapped if someone wanted to place a 503 on a keychain?