Cooper S.
I live for the CABE
http://m.ebay.com/itm/VINTAGE-DRUM-...%3A8d74dac615a0a5eb32d6a1abffe4bdcf%7Ciid%3A2 Several parts to a Norwegian made drum brake, the JØS appeared on DBS brand bikes (as far as I know). The seller doesn't seem to know what it is, but most buyers won't either. Doesn't look like you would have all the parts...