Sometimes rods disappeared (fell out of the drilled hole) and in a few of those, the piece may have been "repaired" by filling in the hole. Look carefully for evidence of a hole. If there's a hole, Harbour Lights will send you a rod.
We believe all Admiralty Heads (however spelled) made in California (250 pieces) or Canada should have a rod. When production was shifted to Malaysia, the rods were phased out - some Malaysian ones had rods, others did not.
As for certificates, Harbour Lights has certificates. Just call and ask for a replacement. Your piece should have no lower value because it is missing a certificate when these are available for the asking.
Call Customer Service 800-365-1219.
John