Sorry to have to say, the Navy buckle and Kmatch7's do not match, in two important ways. First, the Navy buckle's crossbar is set to the left of center. Kmatch7's is dead-center. Also, as shown in one of Diggerkid2003's photos, the Navy buckle's frame curves slightly outward (a "concave curve")... but Kmatch7's buckle's frame curves back on itself (a "convex curve").
In my opinion, Kmatch7's buckle is a horse-harness buckle. Its crossbar is set way back from the buckle's frame in order to accommodate the passage of two very thick leather harness straps.