ive got one maybe somebody can shed some light on. i just bought a 1st model 38cal. safety hammerless. im no expert but i say its a first model because it has the z-bar latch on top. now according to my research they only made approx 5000 of these with the serial numbers ending at 5250. my question is mine has a serial number of 5287. this is clearly stamped at least 3 places on the gun, the bottom of the grip the back of the cylinder ond bottomof the top strap right at the very back. just curious about this and as i say, im noexpert but just hoping someone out there in s-w land can help explain this. thanls for any info,larry d.