I have four 400g Mocconna jars stuffed with them. No idea how many that is
Back in the day you could easily ask $1 premium per coin. but the ones I bought recently I got at spot value as I was buying in bulk.
When silver was making daily gains there was a lot of positive sentiment and probably a bit of FOMO (Fear of missing out) so these were commanding decent premiums for what they were and they were very desirable.
Government issued and therefore guaranteed as much as any other bar or silver product.
Not numismatic so unlikely to be faked (and if you did find an old fake it is worth more than melt anyway)
Recognisable, in as much as people who understand silver in Australia could recognise it
Simple, not like the shillings where you have to remember date ranges etc. to work out the % silver content
Cheap to buy, one of the cheapest ways to acquire silver that isn't shot or scrap or x-ray films.
The legendary stop loss! Even if spot drops to $0 you still have 50 cents!
Legal tender, you could still spend it if for some reason you really needed to...
Easy sums, 3 = Spot price.
Metal refiners will accept them! In any number apparently. These are the same people who would only deal with pre dec if it was 100 tons or more.
Some of the ones I have still have mint lustre and would be considered collectible. Some have a "Double bar" variety which would often get prices of $12-15 each.
At the moment the silver price is being a bit boring so people are not in a rush to buy as they can get it tomorrow at the same price anyway so there isn't the rush to get them. They are pretty plentiful and lots of people have them for sale and not so many people want them, so premiums are down. Once they run out and prices start going up again there will be a bit more desire for them.