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  1. Yes I would agree that the +31457 and +55231 which are so tiny as to be barely visible, are probably patent numbers. "Pat. Pend." would not be used in Europe I would imagine. There are no initials, engravings or design on the case or covers. As the watch is an estate heirloom, I feel certain it is completely original. I am considering offering it for sale. These are some other photos.
  2. Yes thank you for your response. You may be very correct... the rear covers may simply fit very tightly as a safety feature. I see the movement number clearly stamped 565271 on the body. And the case number: 631039 stamped on the inside cover. The other numbers (+31457 and +55231) are stamped on the movement body, appear to be original and are very difficult to see without magnification. Though I am not sure of their significance, I include them here to be as detailed as possible.
  3. I am NOT a pro, but I have this IWC Full Hunter 14K yellow gold antique pocket watch. Original Sav. cal. 53 gi- 19lig. H 5 movement dating from the year 1913 with a full hunter case and cuvette. I believe the watch size is 43.15mm. Approximate thickness about 12mm, approximate weight about 103 grams. The face cover opens easily with the crown button and closes easily and snugly. The inside rear cover seems to be okay. BUT the outside rear cover (it seems to me) should open easily as well with your thumb nail in the little lip on the side. But it is VERY difficult to open and I have to use a small pry tool to get it open. When closing it seems to "snap" closed very snugly as well. I can't believe it could "bent". But I suppose if one were to accidentally bend the open cover toward the hinge? Or could it be caused by the movement being put in another case perhaps? (serial numbers are: movement: 565271. Case number: 631039 +31457 and +55231). Does anyone have experience with this issue or what could cause this? Thanks so much.
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