Greetings and thanks for the question. You have a nice FN 1922 pistol. It was offered in both 7.65mm (which is the same as 32.acp) and 9mm short (which is the same as .380). Yours was made after the German occupation of the plant which took effect in July-August 1940. Because your's was made under German occupation, it should be 7.65mm, but if you aren't sure, I would have someone look at it for you. There is an issue thats bear on value and that is it appears, or at least the slide appears, to have been buffed and refinished at some point. If it has been refinished, that generally detracts from the value. The fact that it has a four digit serial number means that it was probably part of th a group of pistols sometimes called he "first sub variant" which were produced from May 1943 to December 1943. For this series of pistols the Germans basically started the serial numbers over again, which could explain how your example came to have such a relatiely low serial number. It is my understanding that the pistols in this group also had a letter suffix added to the serial number. However, if the Germans in charge at the FN plant followed the serial number practice that had been followed with other firearms, then the very first block would not have a letter suffix. In addition, at some point in the production of the first block in this series, the Germans also abandoned the magazine safety. Does yours have a magazine safety? If it does, that would be more evidence that it was produced early in this series. If you want to learn more about your pistol and FN in general, the best book I've found is FN Browning Pistols: Side Arms That Shaped World History by Anthony Vanderlinden. The question of value or worth is always subjective. You might want to search one of the auction websites for recent sales to find one of a comparable condition and see what it brought. Thanks again for the question and sharing the pictures.