classic motorcycle forum

I was wondering if anyone can help with giving me an understanding what this motor cycle is worth.  I live in Adelaide, South Australia and the motor cycle was restored a number of years ago by my father, who has since passed.  It is a Dalm, circa 1910 and still runs, however the drive belt is missing.  From memory he only rode it a couple of times and it has been parked inside since 1995 after he passed.  I have attached some photographs.  I can supply more photographs if requested.