I found my 2 engines, they were purchased in 1992.
I was wrong about the prop - it isn't laminated, but it's hand carved & very well made
There were some notes included by the manufacturer, in case someone is interested;
"one third of fuel standard" probably means equal parts ether/kerosene/oil. I use a little less oil for the mini diesels. The GZ .12 isn't sensitive about the fuel blend but it's essential to use an ignition improver