5 3/4" x 1 7/8" 4 screw holes Vintage Antique stamped brassmission style door knob backplatesfor mortise box type locksOriginal Patinapretty good conditionPlease check the photo carefully for condition 2 3/16" key to knob shaft centersThe collar hole is about 1/32" less than 3/4" inside diameter of the ferule where the knob fits. (11/16")These usually came with either flashed copper, porcelain or crystal door knobs. These ar...e from a Victorian house in San Francisco with screws Please read Our terms and conditions:Please do not bid if you do not have Paypal! Please do not ask for other forms of payments. Our Shipping Policy:The price of shipping and handling is always calculated for you in our Ebay listings and clearly listed. You see the price when you bid. That is part the final cost of what you are bidding on. We offer at least 50% shipping discount on multiple auctions when they can be shipped in the same package. I will send you an invoice with the final discounted shipping charges listed when all of the items that I SEE you are bidding on are finished. IF you are going to bid on other items let me know and I will wait to send an invoice. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.