These hooks are not marked. Manufacturers of celluloid hooks are known but they can not be matched up with individual hooks.
Celluloid hooks were made from extruded rod. There will not be any mold lines but there may be file marks where the hook was formed.
double ended tortoiseshell celluloid 5 3/8″
tortoiseshell celluloid 5 1/4″
apple juice celluloid 5 3/8″
cranberry celluloid 4 1/2″