The gold coin is in the fountain next to the Mordred Museum. You will see it sparkle in the water. Use it to pay your admission to the museum.
there is not a second gold coin
Jump to the second level where you see the sparkle.
When you arive in astro knights got to the spaceship statue and you will see something shine that is the gold coin
you use the coin to get into the museum which is the first building you see
you can get the coin in astro knights island on the fountain
The gold coin in Astro-knights is in the fountain. You will see something glittering in the water, and if you pick it up, it will be the coin. Use it to pay your admission to the Mordred museum.
The GOLD COIN is in the fountain next to the Mordred Museum. It is the sparkle in the water in the middle of the water part of the fountain. Use it to pay admission to the Museum.
There is a gold coin outside in the fountain.
If you climb the fountain, it is in the water halfway up.
In order to get the coin from the fountain in Poptropica Astro Knights Island, you must go to the fountain and look for the shiny coin. Once you spot it, you walk over to it and it will be added to your dock.
After you get the coin the Museum of Mordred place and give it to the guy in there. Hope it helps.:)
to get the gold coin on astro knights you go on to the rocket ship fountin. at some point you will see a shimer. and that's were the gold coin is. hope that helps!