Jubilee's are the least expensive bracelets Rolex make. Even on ebay, gen's are often very easy to find for not all that much.
I bought a gen folded in very good condition for 150$ last year on VRM. If your unsure, sell it as so and drop the price between gen and rep?
Your bracelet looks very nice, and to me the clasp looks gen... but I'm no expert. If I wasn't positive I would sell it as such, or just keep it.
It's not worth the headache if your not confident in something.