@RSJB18 He's using the 1022 Manual 027 Switch, first made in 1955. It's easily distinguished by the small square shaped switch box housing with the vertical throw lever AND (if it's not missing) the red arrow indicator. It's the only 027 switch that had a built in electrical switch mechanism so you could have insulated sidings or safety blocks. Depending on the configuration of your layout, you'd also need additional lockons or power feeds because of the "shut off" feature of this particular switch.
Liked your video too. Always enjoy seeing your photos over on the switcher Saturday thread.