Unfortunately I don't have any with the KO (Ken Onion) signature on them.
Here's a list:
1660BLSO
1660BRKO
K1660BWKO
1660SO
1660BPST
1660ALCKT Black Alum Scales, Black Blade 595 Pieces
1660BBCKT Black/Blue Smoke Scales, Black Blade 493 Pieces
1660BBKO Black/Blue Smoke Scales, Ken Onion Sig. 750 Pieces
1660BLK Polished Black DLC Blade & Handle 1169 Pieces
1660BLKVIBKO Polished Black DLC FL/Rainbow Blade/KO Sig. 985 Pieces
1660BRKO Black/Red Smoke/Bead Blast Blade/KO Sig. 798 Pieces
1660BWCKTST Black/White Smoke/Black Blade /CE 500 Pieces
1660BWKO Black/White Smoke/KO Sig. 750 Pieces
1660CGT Coarse G-10 Scales/S30V Blade 498 Pieces
1660CKTSLST Blk FL/Bead Blast Blade/CE 648 Pieces
1660GTST G-10/S30V/CE 128 Pieces
1660MVIB STD. 1660VIB w/Matte Finish 459 Pieces
1660T1G10 “Swirl” G-10/ 13C26 Blade 500 Pieces
1660VIBKO STD 1660VIB w/KO Sig. 1052 Pieces
1660PGTST Polished G10/S30V/CE 945 Pieces
1660GTST G-10/S30V/CE 128 Pieces
1660MVIB STD. 1660VIB w/Matte Finish 459 Pieces
There is also a green/white smoke leek that I have seen on You Tube but have never seen another.