In my work for the Texas Historical Commission I come across a number of WWI-era guns displayed on courthouse squares and at veteran's halls that have no accompaning identification. This is such a piece:
These photos were sent to me by a co-worker who did not copy down any markings, so it is all that I have to work with, however I feel confident the folks here will be able to make the identification based on these photos.
Almost certainly a 37mm Type 94 or Type 1 anti-tank gun. (The Type 1 had a longer barrel L/50 rather than L/46). These guns were used extensively by the IJA as mountain guns because they could be broken down into into man-portable sections. This one is a bit unusual because it has got wooden wheels rather than the steel disk wheels seen on many Type 94s.
The attached image is a Type 94 at Atherton in Queensland