Hiyaho Davo-yeah? I never thought about that one, don't have one in mine,I figure it screws into the case, so not likely to leak(much) but it seems S/a boxes from '54 have one; p#67-1709, I guess for functionality, you could make it whatever you want but otherwise for ridgy-didge do a web-search- first listing I got says it's alloy , good luck... I reckon the folks'd get a kick out of an introductory speil