I recently purchased this watch which is in fair condition with radium intact but the dial has "crackled" ?lacquer.Is this a common dial problem? All appears genuine. On the inside of the case back is written I.57 and 6536 1. At 6 o'clock the case has inscribed BREVETT with a "plus" sign with case No: 112092. From this site I understand that the numbering in the 1950's is a problem. Would you think that the item/numbering is correct? At 12 o'clock case inscribed "6536 1". Happy New Year to you all.