Lapping brass and sanding ebony. Shoulder plane #2 is getting close. Shoulder plane #1 (in the background) is getting finish applied to the wooden parts. You can see how fast brass develops a patina/tarnish, #1 had the same sheen a week ago. There are four pins in the plane, depending the light angle, sometimes you can see them, sometimes you can’t, even though they are different colors (brass (copper + zinc) vs bronze (copper + tin)).