Coins That Resemble Australian Coins

It does depend to some degree on how you define "looks and feels". Do they have to have the Queen on the obverse to qualify, does the composition have to be the same (ie to pass in a vending machine), or is matching size and weight the only requirement?

Australian coin dimensions were to a large extent copied from the old British predecimal coinage, and most of the places that once used those same British coins also imitated the same sizes and weights for their own native coinages, at first. Other coinages either accidentally or deliberately imitated the same sizes. The 5 cent (sixpence), 10 cent (shilling) and 20 cent (florin) are most likely to be copied.

I once made a display up of "Our Pacific Neighbours", containing 13 coins similar enough in size and weight to our 10 cent piece to be found in change here, all of which were "10 somethings" in denomination. The coins were from: New Zealand, Fiji, Papua New Guinea, Solomon Islands, Cook Islands, Tuvalu, Kiribati, Vanuatu, New Hebrides, New Caledonia, French Polynesia, Tonga and Samoa.

Now, for most of these coinages, there is no longer an exact match with our 10 cent; either the size is reduced, the composition is different, or both. But theoretically you might still find them in change. The Fijian coins, for example, are still the same size, but made of plated steel. Samoa has only just this year issued redesigned smaller coinage along the lines of New Zealand.

There are other coins from elsewhere in the world that match. Obsolete predecimal coins from Britain, South Africa and Southern Rhodesia come to mind, as well as decimal 5p and 10p coins from Britain and other British territories, such as the Falkland Islands, though again, the British/colonial coinage was redesigned in the 1990s with new sizes and compositions. There are also matches through sheer coincidence. The United Arab Emirates dirham was a perfect match for the size of a 10 cent, until Australian 10 cent coins flooding the vending machines over there caused a redesign of the dirham.

I guess I meant the same shape and with the Queen's portrait (basically enough to pass as Australian if you don't look too closely). Does your list of 13 Pacific neighbours cover that?

not a fanam,
It would be called a Jonney farnaham

I remember maybe 12 years ago you could get a gumball. Probably that long ago a McDonalds cone still cost 30c too.

The list of coins covered by these criteria would be slightly different, then. The only ones remaining would be New Zealand, Fiji, Solomon Islands, Cook Islands and Tuvalu. New additions would be some of the now-obsolete "British and colonial" coins I mentioned earlier, specifically the 5p and 10p coins. I think we'd add Britain itself, as well as the following territories: Isle of Man, Jersey, Gibraltar, St Helena & Ascension and Falkland Islands. And just for completeness, there's the old colonial-transition coinage from Rhodesia. If you also include the old Gillick portrait of the Queen (as seen on Australian predecimal coins), then a few more obsolete predecimal coinages such as South Africa and Nigeria could be added, but since that portrait would also stand out like a sore thumb if given in change in Australia today, I won't include them.

Some coins of Guernsey have the Queen's portrait but the layout of the obverse is sufficiently different to be noticeable at first glance. Likewise the interim coinage for Gambia, the only circulating coins to bear the Queen's portrait but not her name, is quite distinctive. There are also coins from other dominions and territories, like the Canadian 25 cents, that are similar to, but not quite the same as, an Australian coin in size and could be substituted by the inattentive.

I should point out that all of the coins mentioned here have been replaced by coins that are smaller, with the exception of the Solomon Islands and Tuvalu. Tuvalu hasn't issued coins this millenium, so we don't know what their next circulation coins would be like. So in that sense, the Solomons are the "only" country where you can go to today and still find coinage more or less identical to Australia's. Both of these countries still technically circulate their 1c and 2c coins, too.

Back to the OP, just about everything from countries connected to England was somewhat similar.

I have florins from Australia,New Zealand,South africa and Of course the UK.
They are all the same size.
they are either Stirling silver or 50% silver, Depends on when they were debased.
The sixpence,threepence and the shilling are the same way.
I wonder if all these countries got their planchets from the same place.
Anyway they are all great looking and feeling coins.

I read somewhere a while ago that "Australia has some of the largest coins in the world" in relation to their size, weight, and thickness by comparison to the standard coinage of many other countries. Particularly now that virtually all of the African, Asian, and now most of the Pacific colonies have abandoned the ancient silver weight sizes for smaller, cheaper, "ergonomic" coins. Australia is almost the only country left I can think of off the bat that still uses the florin, shilling, etc. sizes. It can be hard to let go of something so many people grew up around and became accustomed to. My country keeps attempting to do away with the penny as well as occasional talk of doing away with the nickel or downsizing it but so far there's been little movement.

It's important to note that many coins of other countries that have similar size and weight to Australian coins are often minted in Australia.

Once upon a time, a few cents were worth a little something. The Aussie is currently one of the more higher valued currencies these days, especially compared to the rates of the eighties. But then...part of its high exchange may only be because the US dollar has lost a tremendous amount of value in the last ten years relative to other currencies. I still wonder if an eventual change in the change is imminent.