HELP WITH SCOTTISH SILVER H J MAKERS MARK

HI, CAN ANYONE HELP WITH THE MAKERS MARK ON THIS SWALLOW PENDANT IT IS H J. THE HALLMARK HAS A REARING LION AND THE OTHER 2 MARKS ARE UNCLEAR. THE DATE LETTER LOOKS LIKE AN OLD SWIRLY F. I THINK IT MAY BE A HJALTASTEYN DESIGN BUT AM UNSURE OF THE YEAR IT WAS MADE. ANY HELP WOULD BE GREATLY APPRECIATED. THANKS.[/img]

Hi, HJ IS FOR JOHN HART OF HEBRIDEAN JEWELLERY ON SOUTH UIST SCOTLAND IT OPENED IN 1979 SO YOUR PENDANT IS AFTER THIS DATE,
JOHN HART SIGNS HIS NAME HJ SO PEOPLE DONT CONFUSE HIM WITH HIS FATHER WHO IS ALSO CALLED JOHN HART WHO SIGNS HIS PIECES JH IN A MONOGRAM AND USUALLY IONA
HOPE THIS HELPS KIERAN