These are an original pair of men's platform boots from the 70s disco era. They are from a Hollywood prop studio called palace costume. They have provided clothing for many movies and use authentic items. They did outfit the movie Boogie Nights but I have not watched it to see if these boots might be in there. The prop studio had a huge sale which is something they don't do often at all.
These are marked 8.5. Heel measures 3", platform is 1".
These do have the old metal zippers. Made by a shoe maker called San Remo, Made in Italy.
These are old and I tried to get pics of every part. Overall the condition isn't too bad for their age. These were probably used only as a prop. I tried looking for other 70s disco shoes from this company and only found a couple. Please be sure to message with any questions.
I have 2 pair in different colors I am selling, so be sure to go check out the other pair as well.