Help me identify this Chinese coin

Hello, welcome aboard !

Please precise thé diameter and weight 

The diameter is 15mm. I don't really have the instrument to weigh such a light object, so I can't confirm the weight.

First, give cropped pictures : 

Then look to Numisdoc to find the emperor of this supposed coin from the Qing dynasty.

Unfortunately no emperor fits, so it's a charm with a stylized writting of "Boo Chiowan" on reverse.

Now .. it's more complex to decipher a charm, it takes more time, but it's usually possible :)

The first character on top is complex with many strokes.

The second character on bottom is surprising looking a bit like : 失 (but not really)

The two other horizontal characters are usuals : 寶通

So … finding what is this second character should be the next step !

The second character is 庆 which is the chinese simplified character of 慶, so a recent charm.

May be associated to 嘉 (嘉慶) but it would be a nonsense here.

Then several associations with other characters leads to happiness or luck, but I can't decipher the first character.

嘉庆通宝/Jiaqing Tongbao

I can make out the word on the top to be a "嘉“/Jia

What confuses me is that I have not seen one with a simplified Qing-庆

All examples of Jiaqing Tongbaos have a traditional character Qing-慶

Boo-chiowan on the reverse, but the Jia/“嘉”on the obverse, looks very suspicious to me

On second thought, I'm 100% sure it spells 嘉庆通宝，Jiaqing Tongbao, I've studied that “mysterious” character for a good 30 minutes, and it indeed is a "嘉“ Jia

but now its the problem of the simplified Qing "庆“