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white/opal Marmite jars by AGM - Aus or NZ ?

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Lustrousstone:
Well sleuthed. It depends which numbers on the bottom you are talking about. They are extremely unlikely to relate to dates, as changing a mould is expensive if it's not worn out. Simple numbers such as 1 or 2 often relate to the machine that produced the item (often seen on French machine blown items). Or to volume or size. More complex numbers probably relate to item model number, which may or may not be a catalogue number (unlikely if it's a commissioned item, as they only appear in workbooks not catalogues). The another option for a number is factory number

DaveN:
Hi Lustrousstone,
the first AGM mark was entwined letters 1916-1923, then AGM in a line with a letter code 1923-1950, then GM within the A date from 1930 to today. The V893 should be a job number, but the extra number, 1 etc, is not mentioned :-(
https://hiddencanberra.webs.com/Dumps/CHAPTER%20ONE%20Dating%20the%20Glass%20in%20Stirling%20Park.pdf
p18 in the pdf....
The numbered jars I'm thinking of are all V893, thence 1, 8, 10, 11, 12, 13, 17.
The 11 can be seen on the first jpeg above. They are all the same size, probably 8oz.
The lettering is always clear.

One NZ archaeological report states AGM NZ at Penrose made amber glass, a second machine added in 1927 made clear glass. It is possible the opal glass was always made in Australia.

Dave

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