[GreenKeys] Rare gear?

[John, W9DDD]

I am the proud owner of a 104580LS 7  tooth pinion.

Looking at the chart on page 21 of bullet 1095B, I find it's for 70 
WPM/420 OPM.  That seems to be a part of an ED rather than XD, in other 
words a receiving distributor.  (a guess on my part knowing that RX 
shaves in 15 or 28 printers turn at that speed)

How would this differ from the 74912-7T used on the 15 printer?

I suspect that few if any EDs still exist, so I suspect this is a 
candidate for recycling.

Anyone know the significance of the LS as a suffix of  that part number?

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The above comments or recommendations are SWAG. Use at your own risk.

John, W9DDD