That this is the Note 3 with sprint?
Samsung N900GRY-Gray
Hopefully this will help:
Sign List Of Model Numbers for Note 3
Update:
SM-N900 - Exynos Version (International).
SM-N9005 - Snapdragon Version(International).
SM-N9002 - Snapdragon Double SIM(Chinese).
SM-N9005T - Snapdragon Version (T-Mobile)
SM-N900P - Snapdragon Version (Sprint)
SM-N9005P - Snapdragon Version (Sprint)
SM-N9005A - Snapdragon Version (AT&T)
SM-N9007 - Snapdragon Version (Optus)
SM-N900W8- Snapdragon Version (Canadian)
SM-N9000Q - Exynos Version(Turkish)
SM-N9000- Exynos Version(Supposedly International,but don't know the difference with n900)
SM-N900X -Snapdragon Version(Retail Live Demo Unit)
Still need h/w info of these:
SM-N9000Q_MEA
SM-N900K--(KT Telecom South Korea)
SM-N900L--(LGU+ South Korea)
SM-N900S---(SK Telecom South Korea)
SM-N900W8_LA
SM-N900_MEA
SM-N900_SEA
SM-N900_SWA
SM-900 - International Exynos
SM-9005 - International S800
SM-9002 - International Double SIM
SM-9005T - TMobile S800
SM-9005P - Sprint S800
SM-9005A - AT&T S800
SM-N900
SM-N9002
SM-N9005
SM-N9006
SM-N9007
SM-N9008
SM-N9009
SM-N900A
SM-N900D (SC-01F)
SM-N900J (SCL22)
SM-N900K
SM-N900L
SM-N900P
SM-N9000Q
SM-N900R4
SM-N900S
SM-N900T
SM-N900V
SM-N900W8
SM-N900X
Have not found anything with GRY yet, except a note 3 model for New Zealand. Not sure that's accurate, of course there's the Nokia n900gry.