2001/2002/2003/2004 Siberian Tiger River Siberian Model L is indicated by the letter in the serial number. for example.

Serial Number L-3C2015 the serial number would read L is model 3 third quarter C year(2001) and 2015 is the unit number made.

Serial Number L-3D2015 the serial number would read L is model 3 third quarter D year(2002) and 2015 is the unit number made.

Serial Number L-3E2015 the serial number would read L is model 3 third quarter E year(2003) and 2015 is the unit number made.

Serial Number L-3F2015 the serial number would read L is model 3 third quarter F year(2004) and 2015 is the unit number made.

2004 Siberian Has Control Panel 76080 and 2 Jet Pumps 72196, 73023 . 2004 Has a water fall