See this on a lot of gear, even crystal holders. What does it mean? Thanks -- Sam Stokes, KG6XYZ -------------- next part -------------- A non-text attachment was scrubbed... Name: OH_stamp.jpg Type: image/jpeg Size: 5426 bytes Desc: not available URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20220421/c7164d63/attachment-0001.jpg>