Seiko dive watch Q?

[u812]

Does anyone know anything about this model Seiko SQ sports 100.Is it a good one? What would be a good price for one NIB?

 

[rajan]

My dad got his from way way back and I could no longer remember. It is probably at least 20 years old and he is still using it as his beater. The 7s26 movement is one tough caliber.