Andrew, you're awesome. Data base shows 8 0607, so change over is within the couple dozen after. So 0766 is a rather early 1979, as it appears they went as far as about 1500? I've an 0 1670 which is 1980, and very nicely scalloped. Could Hamer have done this scalloping you think? There are perfect dot markers, and also additional routing on back, all professionally done. Though unlike control cavity, the unique compartments have no finish inside. Could Hamer route something after the finishing stage of the build process? For a custom request?