Very nice. It's a no series Kokura with first (of three) variation bayonet housing. Don't have my references with me but off the top of my head receiver, bolt, dustcover, and maybe bayonet housing should match the last three numbers of the sn. The rest of the numbers should match a three digit assembly number stamped on the bottom of the receiver. Don't think 44s were staked, but be careful not to chew up the screws if you do decide to disassemble. Too bad about the rust, that does take a good bit off. The rods are harder to find than the gun, probably worth a couple hundred bucks by themselves. A mint, matching first variation Type 44 with matching dustcover and rods could easily bring in $1000 to $1500, maybe more if you could prove provenance. Hard to say what yours would bring considering condition, but you could probably still get close to $1000, maybe more for one so complete.
