Distinguishing japanese 1 Bu coins

Hello

Could someone help me what is the difference between 1 Bu coins from Tenpo, Ansei and Meiji periods?

As far as I understand they have same measurements and when I check photos it seems that all have same ideograms and same number of cherry blossoms. I have several pieces and don't know how to distinguish one period from another.

Please help :)

The difference between Tenpo, Ansei, and Meiji Ichibu can be identified through the position of the inverted sakura. There are tables out there for this, and I can post more detailed ones later. In the mean time, this quick guide on the rectangle coins website may help. https://rectanglecoins.com/silver-id-guide#7ec20df1-8137-4bed-b892-aae6366c61b6 Additionally, there are more subtle differences, such as the tenpo ichibu having weaker strikes and heavy file marks on meiji issues

Wow, this ref link is great, thanks so much!
 

I'll probably have some question to this however I want to investigate my Bu coins first.
I have a problem with understanding the below…. What does it mean ‘See other sakura’??? I don't get it.

I believe it means that, for the first one, if ONLY ONE side has the inverted Sakura in the orange section, then whichever square the inverted Sakura is on the OTHER side, (Which should NOT be in the orange section as well, otherwise it would be always Ansei), that's what type it is. For example, if the obverse has the inverted Sakura on the very top left square, and on the reverse the inverted Sakura is on the very bottom right square, the it is a Tenpo Ichibu.

For the second one, I believe it means that if NO Sakura are inverted on one of the sides, then whichever square the inverted Sakura is on the side that DOES have an inverted Sakura determines the type. For example, if there are no inverted Sakura on the obverse, and there is an inverted one on the bottom right of the reverse, then it is a Tenpo Ichibu. Another example, following what the note says, if there's no inverted Sakura on the obverse, but there is an inverted sakura in any of the orange squares on the reverse, then it is an Ansei Ichibu.

I hope I explained this well haha!

I've just finished investigating my bu coins. Thanks to your ref and further assistance I was able to distinguish all of them :)

I really appreciate your help on this! :)

I wonder if You could help me some more with shu coins.

I have two pieces and I'm trying to find out the correct era.

First one

The second one 

According to the https://rectanglecoins.com/silver-set the difference can be found with the top left character - three vertical strokes at the top of it

Unfortunately the Ansei is not mentioned there but I've checked the Numista.com ref N#282638 instead of.

When I compare my coins with above references it seems that my second coin looks more like Ansei than Kaei.

But I have many doubts regarding the first coin. The top left character looks different than any other refs.

My impression is the first one shu piece is not authentic.  Just a feeling.

I think your second one is Kaei.  It is Type Hd or Id.  It is only my opinion.

The first one is definitely not authentic. The characters are all out of wack and the border also doesn't look right.

As for the second one, it seems the best match is Kaei Hd, based on the inward curve of the 銀 character, and the middle stroke of the 座 character staying below the 人 radicals. The disconnected left stroke of 广 also matches.

Do You think that this one is a modern fake or is it possible to be a counterfeit from the era?

As far as I know, the counterfeits from the era were just the copper alloy coinage.  But if your first piece had the same size, weight and, better, density, then I would be willing to consider that it could be a counterfeit from the era.  

On the other side, if the physical properties are different and/or it is attracted to a magnet I would suspect a modern fake. 

The weight of the first coin is 1.65g. Although it's not magnetic it seems that the weight difference is abnormal so I assume that it's indeed a counterfeit.

Thanks for the feedback.

To confirm, the first one (the one we think is not genuine) is 1.65g.

The second one (we think is Kaei Hd).  The target weight of authentic Kaei pieces is 1.89g.  What do you have for the weight of that one?

The second coin is 1.84g, so fine enough in my estimation

I agree with you.  Thank you.

Many thanks for both of You. I feel I've learned so much regarding these kind of coins.

That's a pity that this shu coin is just a modern fake but still, the knowledge costs :)

Glad to have helped!