My Dad found a classic claw n egg meer at a tag sale. An entire piece of stem is chipped off on the top part if the button. The pipe itself has threading in the meerchaum and in ink next to the hole is written 6. Not sure if this might reference sizing, possibly wishful thinking. Any recommendations for how to determine size, I assume just measure the width? Also, where to find a stem that is amber, slight bend with a male end to screw into the pipe? Thank you!