What's your obsession? For Mackay man Stewart Sutton it's bottles.
Mr Sutton said he got the collecting bug when he found his first bottle as a boy in the 70s.
"It was a blue castor oil container, I got told it was worth $10 and I thought I was the richest boy in Australia, unfortunately it's still only worth $10," he said.
The recent sale of a ginger beer bottle in Warwick for over $17,000 has more people talking about the value of old bottles and where to find them.
Mr Sutton's vast collection comes from plenty of hard work, trading other collectors, hunting through junk shops and even digging at old town tips.
"I've been lucky enough that I have dug a lot of bottles, I got into town tips and moved a lot of dirt to get these bottles," he said.
Life long passion
Mr Sutton said his early blue bottle find inspired a life of collecting, and has impacted his overall collection.
"It's one of the specific subjects I collect in old bottles; embossed castor oils," he said.
The vivid cobalt blue bottles take a special place in his collection.
"It's been a bit of a fascination for me for years and years," Mr Sutton said.
Collection tells history of beverages
From the cobalt blue poison bottles, to ginger beers in blob-top stone from local potteries in the '30s and '40s, the collection shows how bottle design has changed with the times.
Mr Sutton's said the first fizzy drinks were held in horizontal egg bottles which were designed to lay on their side.
"Laying down kept the cork wet, so it expanded against the glass, it was called the Hamilton Patent," he said.
"With the evolution of aerated waters there are hundred and hundreds of patents before the crown seal or crown cap came in which is still used today."
Stone was also used to prevent explosions in home brewed beverages like ginger beer, Mr Sutton explained.
"Quite often the bottles would blow up, it was fairly volatile, that's why they made them out of stone to stop them blowing up," he said.
One last elusive bottle
In his recent focus on collecting local glass, Mr Sutton is still hunting for a complete Mackay Vestergaard ginger beer bottle.
"Unusually, most ginger beers are brown top, white bottom, but with the Vestergaard it's the other way round: brown bottom, white top," he said.
"Extremely hard to come by one in good condition and I would give my eye teeth for one."
