For the most part, the positions of multicoloured and Birds notes are very well known.
However, before the multicoloured notes switched from plate numbers to position numbers, it was a bit different.
If you could PM me with the eBay information that you refer to, perhaps I could help you a bit better.
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BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.