Please help me identify cash coins (part2)

Hi. Here's another cash coin to identify:

diameter: 22,2mm, weight: 4,1g

These two coins are slightly similar, or maybe this is a copy?

N#1133   
N#30298

Same story as your previous coin. I think you've correctly identified the denomination, emperor, date range, and mint. As you can see there's some variability in weight, diameter, and writing. If you want to go the Hartill book you could probably identify the variety. While both this and the previous coin are interesting and worthwhile historical additions to a collection, they are both very common and low value, and of little interest to counterfeiters. 

Thank you again for your help :)
So I can assume that these two coins are also probably authentic?

The diameter and weight of both coins are similar: about 23mm and about 4g

Again, I see no particular reason to suspect counterfeits. If you search the internet you can find articles about how to spot counterfeits, and which Chinese coins are commonly counterfeited. 

QianLong cash coins are very common, so I see no reason to counterfeit them