My Mother was a Wreford and I worked in the store at Stanleytown and at Heathburn. Yes the cash system was unique to Wreford in N/A it was a single wire between stations to Miss Cameron powered by a bungee cord you pulled the cord down which pulled the cup back and then released the cup. Some times this cable broke as it was in tension to keep it tight. So sorry to all old friends from my days in N/A I left in 1971 and came to Canada. May the Lord Bless you all.
New Brunswick, Canada