Parts are originally Kramer/barton no 388-can't get anymore

A home owner from St. Louis MO says:
My carpenter thinks your part no 23-155 rear closet door roller 1/2" offset will work. He said to ck/buy from you or maybe you have it in stock somewhere
Thumbnail of the uploaded file named closet door hanger
Thumbnail of the uploaded file named closet door hanger
Thumbnail of the uploaded file named closet door hanger
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Paul from SWISCO responded:

Thanks for reaching out to us. I'm afraid I haven't found any source for your old roller. Our 23-155 might be feasible as a substitute though we can't make any promises. The offset is 1/2" and the groove nylon wheel is 7/8" in diameter. The roller was used on the old Kenna Frame doors as well. 

Detail of 23-155
Detail of 23-155

Alternate view of 23-155
Alternate view of 23-155

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