Your serial number is quite a bit high to be the early semi- pistol grip, Craig. They only lasted a few thousand serial numbers and only lasted the first few years. JB's is similar but as you notice, the bottom of the newer pistol grip is square and protrudes farther. The earlier ones were rounded off like JB's and and the cap didn't stick out as much as the earlier ones. The early ones were discontinued around 1933. Good luck.