Please help identifying the three axle trucks shown below. I have numbered them to make it easy to keep the description with the picture. Thank you, John
#1 pair is above. Distinguishing feature is the 'tab' with the hole.
Set #2 may be K-Line without couplers
Set #3 above may be MTH passenger with articulated couplers.
Set #4
Set #5. Metal side frames and one 'inner' screw is missing from one truck. May be ALL NATION passenger car trucks.
Does it matter who made a center rail roller?
Thank you, John