The photos show everything. Not sure the age, somewhat vintage, I am sure. You get the exact one that you see in the photos. It could stand a little cleanup, and you can see some rust. The center hole, I believe, is 1 inch diameter. I don't believe that there are 1-1/32 inch holes, I'm sure that this is 1 inch, but it almost seems a slight, ever so slight, bit more, but I'm going with 1 inch. The photos are the description. They show the condition and the size. Please use the zoom feature and ask any questions you may have.  I HAVE A PAIR OF 5 LB. PLATES IN MY OTHER AUCTIONS. I COMBINE SHIPPING.