@Spacefruit - I see not only a length difference but width as well. Is there a definitive answer to which is correct for the sake of clarity? Not that I am ever going to be in the market for one of these- but I am genuinely curious as it's become such a hot topic. I know that orange second hands were used in other Omega models, so it's probable there were several part numbers for these hands at different lengths/widths for different models.
Just for the sake of curiosity, I looked up orange hands a couple of different ways. The first was using the caliber 321 as the starting point, then looking for hands for that caliber (which also fit the 9861 so there's a lot of overlap). There are 3 listed on the Omega Extranet, so then I used each hand part number to check what cases they are used for - information is presented below for interest:
Hand 1 - shortest of the three:
066TP0861LG13SC | ORANGE HANDS CAL.0861 13.00
Cases:
055ST1450020 | STEEL CASE CAL.0861
055ST1450020DE | STEEL CASE CAL.861
055ST1450020TA | STEEL CASE CAL.861
055ST1450020TE | STEEL CASE CAL.861
Hand 2 - middle length:
066TP0865LG1350 | ORANGE HANDS CAL.0865 13.50
Cases:
055ST1450007 | STEEL CASE POL. CAL.0865
055ST1450008 | STEEL CASE CAL.0865
055ST1450009 | STEEL CASE CAL.0865 CHRONOSTOP
055ST1450010 | STEEL CASE CAL.0865 CHRONOSTOP
055ST1450023 | CASE HARD METAL CAL.0861
Hand 3 - longest of the three:
066TP0861LG14SC | ORANGE HANDS CAL.0861 14.00
Cases:
055ST1450006 | STEEL CASE CAL.0321
055ST1450014 | COMPLETE CASE CAL.0861
055ST1450034 | STEEL CASE CAL.0861
055ST1450037 | STEEL CASE CAL.0861
Next step was to just look for all the orange hands Omega uses across all watches they make, and then single out those that appear to be chronograph style hands. Then again, use those part numbers to find what cases they are for:
Hand 4:
066QP4309 | SEC.HANDS 073 WL 4037_62 - 14,75
Case:
055ST1450022 | STEEL CASE CAL.0861/1861
Hand 5:
066QPZ010321 | HAN CHRONO LACK METAL 73 ORANGE 14.8
Case:
055SUZ009287 | CASE 311 ST ALU 42 1861 BLACK ORANGE LE – note that this is for the recent Ultraman LE...
Hand 6:
066TP0300 | ORANGE SEC.HANDS CAL.0930 13.5
Case:
055ST1460011 | STEEL CASE CAL.0930
Hand 7:
066TP0910LG1350 | SEC.ORANG. CAL.910 LONG 13.50
Cases:
055BA1450013 | 18CT2N YEL.GOLD CASE C.910 FLIGHTMASTER
055ST1450013 | STEEL CASE CAL.0910 FLIGHTMASTER
055ST1450026 | STEEL CASE CAL. 0911
055ST3450801 | STEEL CASE CAL.910
Hand 8:
066TP0920LG1345 | HANDS SEC. CAL.0920 LG 13.45
Cases:
055ST1460009 | STEEL CASE CAL.0920
055ST1460010 | STEEL CASE CAL.0920
Cheers, Al