sliding closet door rollers

A home owner from Portland, OR says:
Looking for a stainless steel sliding closet door mount. 2.5" wide, 1.75" high. Probably from around 2003 originally. Two wheels. Markings above the door read "No 54" above, and "3/4 1 - 3 /10" on bottom left, and "Front Rear" bottom right.
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Bob from SWISCO responded:

Yes, I'm afraid that Lawrence Brothers is no longer around. The closest matches we have are our 23-031, which has a 3/4" single nylon wheel and 1/8" off set, and our 23-047, which has a 1/2" offset instead. These have single wheels, but work the same. Look over the dimensions to see if either could work. If the wheel diameters are off, you may need to resort to one of our bypass track kits, like our 23-500, 23-501, 23-502 or 23-503

A home owner from Portland, OR says:
Thanks for this. What exactly is the "offset"? On our current piece, the distance from the edge of the door to the center of the wheel (looking down from the top) is 3/4". The wheel width is 1/8". The wheel diameter is 1/2". Which ine of yours do you suspect would work?
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Bob from SWISCO responded:
The offset is the the distance that the flange with the wheel projects out from the rest of the roller body. For the 23-031, this is 1/8". For the 23-047, it's 1/2". The 23-047 is probably your best bet, but compare and see. Again, if neither match, you may have to resort to using one of our kits instead. 
Alternate view of 23-031
23-031 : Door Hanger, 1/8
Door Hanger, 1/8" offset
23-031
$7.98
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23-047 : Door Hanger, 1/2
Door Hanger, 1/2" offset
23-047
$7.98
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23-500 : 2 Door Sliding Closet Door Track Kit, 4ft
2 Door Sliding Closet Door Track Kit, 4ft
23-500
$15.98
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23-501 : 2 Door Bypass Closet Door Hardware Kit, 5ft
2 Door Bypass Closet Door Hardware Kit, 5ft
23-501
$18.72
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23-502 : 2 Door Bypass Closet Door Hardware Set, 6ft
2 Door Bypass Closet Door Hardware Set, 6ft
23-502
$22.98
VIEW >
23-503 : 2 Door Sliding Closet Door Track Set, 8ft
2 Door Sliding Closet Door Track Set, 8ft
23-503
$33.75
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Installing a Two-Door Sliding Closet Door Track Kit
Installing a Two-Door Sliding Closet Door Track Kit
VIDEO
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