To me it seems to be a 2nd order (12db slope). The 16uf cap and the .92mh coil are doing double duty.
The 16uf cap is bypassing HF to the tweeter but also shunting HF from the woofer. Same is true of the
.92mh coil. It's shunting LF away from the tweeter and bypassing LF to the woofer.That's how it looks to me
anyway , but I'm sure the experts here will clarify!