<Question> Help me clarify " Omega Speedmaster Reduce (3510.50) "

I'm in need some suggestion/comment...

<Q1>
- Normally, When buying a watch from a boutique,
How many booklet will they give you? such as (1.Operarion booklet 2.Operation Fixed bezel booklet 3.Worldwide booklet) Have only 3 booklet? for GenI

<Q2>
- Why do I find second-hand watches(Omega speedmaster reduce) on various websites(Ex.Chrono24,E-Bay or etc..)?
Most of the watches don't come with price tags at all and I can only find them complete with warranty and manual9booklet)
Do you have any comment?

<Q3>
- My watch serial number as table in the link below in early 2000s right?

https://tigerriverwatches.com/complete-guide-to-understanding-omega-serial-numbers-blog/



https://www.watchesbytimepiece.com/knowledge-base/omega-serial-numbers/



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My watch

• Speedmaster reduced 3510.50 (GenI)
• Calibre 3220
• Super luminova dial
• S/N : 574xxxxx

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Thank you so much😀