Can I get an aproximate value of these Roman coins? [решено]

Hi,

I hope you're fine and satisfied by your first posting on this site, and a hearty welcome to you, since I suppose, you'll enrich this site with your knowledge of coins?

Please read the forum policy before posting. If you have problems understanding that, please, continue asking.

What a happy encounter we've had, please enrich me in your further post adding the weight, diameter, thickness, alloy of each coin in postings separately by coin.

Take care and enjoy your hobby!

Since you're asking for a evaluation I won't identify each coin separately just give values based on my experience in buying/selling ancient coins:

No1: 20-30$

No2: 5$

No3: 1-2$

No4: 3-5$

No5: Missing its obverse but if it's the same quality as the reverse 5$

No6: Not a Roman but Venetian coin from the 18th century, 5-10$

Thank you very much. That's all I wanted. 

I apologize, I skipped the obverse. Here it is