6 '03's to srs check please

[dlc_aec]

can someone please check these 6 1903 s/n?

sa - 1315986
sa - 1513646

ria - 296104
ria - 335408

ra - 3227010
ra - 3077170

thanks!
douglas

[Herschel]

No hit on any of those numbers.
Sorry.