Roller track for old Monarch mirrored closet doors

A home owner from Colorado says:
September 26, 2020
We need to replace our two 48" roller tracks. Not sure of the replacement part, so pictures are attached. Please let me know if you can help.
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Bob from SWISCO responded:
September 30, 2020

This roller looks like our 23-028 Concave Roller, in which case a track like our 47" 23-270 could work for you. Take a look and see if you agree. 
Mirror Door Roller, Concave
Mirror Door Roller, Concave
23-028
$10.25
47" Bottom Concave Roller Track
47" Bottom Concave Roller Track
23-270
$18.24
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