During a visit to New Zealand in 1978 I toured the North Island. Don't remember the name of it but there was an area where families of Yugoslav origin had been mainly active in searching for KAURI GUM. The very friendly farmer we met explained that this industry dwindled after WWII. I don't remember the reason but probably because of new products were being manufactured. The old farmer still had a lot of gum samples in his toolshed. As souvenirs I got 2 pieces of Kauri Gum, harvested long before WWII. I checked with website justkiwi.com and they say a lot about the different qualities. I have a question pending with them how one would recognize the quality - could an expert do that from pictures.
The question I want to put to this forum is: Would the pieces have an antique value because they were 'harvested' about 100 years ago? Or should I see these pieces as a form of raw material (justkiwi says approx 1 usd per gram and I have 300 grams)?