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吉興 JiXing ( = YenJiXing 顏吉興, maker, based in 汕頭 Swatow/Shantou )

點銅 DianTong ( Although "Tong" alone means "copper", this term actually means "pewter"; some items made by JixXing are marked also in English so it's clear)

Picture 2:
正銀白 ZhengYinBai
Although the word "Yin" indeed means "silver", I found an article in Mandarin showing the same mark and it indicates that the material is "white copper".

Picture 3:
廣東 GuangDong (location)
協益號 XieYiHao (maker)

You will need to turn your picture 90 degrees clockwise to read the texts.

The right one reads 票銀 (Piaoyin).
The left one reads 姚泉興(Yaoquanxing, a maker based in Chengdu, Sichuan).

There is an older post mentioning this maker:
http://925-1000.com/forum/viewtopic.php?f=13&t=26817