Here's a 731.2 Threadless Insulator made with a "Square" pin hole. I made them about 5 years ago so everybody could afford a square pin insulator of which there is only one known. These are the same shape and size of a real 731.2 and on the shelf or in the window you can't tell the difference from a real one. The difference is these are base embossed on the bottom "squarepin1870@yahoo.com designed by Bob Alexander" That way no one can confuse these with a real one. This one is very unusual in that it was made from old purple sun colored glass and is full of bubbles. there is an indian head penny in the done as well. Only 5 of these were ever made and this is the last one. If you set it in the window for around 6 months it will turn a true SCA purple Price? $55 postpaid anywhere in the U.S.A. PayPal fine if sent as a "Friend" Use this Email for PayPal. First email get's the item - Thanks for looking - Good Collecting.