So I did some looking around at photos (google images, gun forums, etc.) and I could not find another 5943 with that particular Caution engraving on the slide. But I know I have seen it before. I also did not find another 5943 with the flash chromed trigger and hammer. I am starting to think my assessment is correct and this is a very early model -or- it was specified or requested when Cleveland PD ordered them. I did find a couple 5946's also marked CLVLNDOHPD that did not have the engraving.