So I recently bought a bunch of mostly 50% silver in a deceased estate lot at auction. There were some absolute beauties in the mix, well-struck, and perfectly uncirculated late-predecimal silver. I've attached pictures of the 1961 shilling and 1962 6d as reference. In the mix, there is also really nice 3d from 1960 and '61, another '62 6d, a '60 shilling, and another '61 shilling. All are in a similar condition to the pictures. The most striking (no pun intended) to me is how well-struck they are, in hand they're even nicer- every hair is visible.
My question: is it possible these are proof coins? If so would there be any definitive way of knowing? I'm sure they'd grade as uncirculated at the very least, but I am a rather wishful thinker
Thanks for your thoughts!