Trisseh
Duck-duck-chicken!
I’m extra suspicious of any bird not showing any obvious signs either way after I sold a bantam EE chick to a friend, we were both convinced was a pullet, and it only just developed its saddles and hackles at 20 weeks. Had no leakage on the wings, no obvious male traits otherwise. The comb was relatively prominent and had wattle development, but otherwise still looked feminine. Lol.That wing patch is pretty sketch. At 16 weeks I'd expect more male traits to be visible though.
Update us in a few weeks, OP. Your bird is an interesting case.