I haven't been able to match these marks.
Foot
Side
Finally the bat
The decoration and age signs of this bowl looks as if it were from the late Qing dynasty. However, there is an apocryphal Chenghua four character mark. Based on this I would think it is perhaps rather late Qing to early republic period.
Hi Peter
I know apocryphal marks don't help with the piece but can you read the characters. I try to match them to other writing so I can recognize a few some day.
... but can you read the characters
Is that meant to be a question? If yes, please read my answer carefully, it is there.
Also, I would recommend to read the section about marks, so that you know about their uselessness. :-)