SEIKO that i can't figure out, neither the watch dealers I've visited

[Terje]

Hello. I'm new here. My name is Terje, and I'm Norwegian.
I was given an SEIKO wristwatch here the other day, and it's really nice. Everything works. But i have one problem. I can't find this watch anywhere on internet or any store that selling SEIKO. I really want to know what i got.
This is what i know : SEIKO Chronograph 20 bar 7T62-OEBO Serial number 5D0131
Is it anyone here who know what SEIKO this is? Model, age, value? I would be grateful for answers, because this is bothering me a lot

 

[SeikoForum]

I've never seen this model before either. Have you opened the caseback and inspected the movement?

 

[Terje]

No i have not because I'm afraid to brake anything. I have the right gear for it, so maby i will, then take some photos

 

[SeikoForum]

Invest in an inexpensive caseback opener. If you cannot Google the model number, there's a good chance your watch is a fake.

 

[Terje]

I have opened it, and this is what it looks like

 

[Terje]

It says : japan
Seiko time corp
No jewels
7T62A
2

 

[Terje]

Invest in an inexpensive caseback opener. If you cannot Google the model number, there's a good chance your watch is a fake.

I have one, and i opened it. Look at the photo (bad quality) and i typed what was written inside.

 

[SeikoForum]

Looks like an authentic Seiko to me. It doesn't strike me as a valuable model. Probably somewhere between $25-100 on eBay. Nice watch, though. I would make sure it's running and wear it with pride.