Retro Ceramic Wall Hangings (Pair)

How cool are this pair?! They've been beautifully crafted from ceramic, and finished with some lovely and colourful glaze with glass insets. Our pair of matching fish are also rather unique - I do love retro wall hangings, and think this might be the first set like this I've come across. My bet is that they date to the 70s. One of the plates has a crack on the back, but I suspect that this was from manufacture and has always been there... At any rate, I've reinforced this with some super glue and if they're safely hanging up I don't foresee any issues!
P.S. I've added some strong twine for hanging since these images were taken!