Numismatist. 50 year member ANA. Winner of four ANA Heath Literary Awards; three Wayte and Olga Raymond Literary Awards; Numismatist of the Year Award 2009, and Lifetime Achievement Award 2020. Winner numerous NLG Literary Awards.
It does look like the left date which would be either obverse 2 or 3. I think I see the reverse die line for reverse A, but it's hard to say for sure from the pics. If so that would make it BF-3.
It sounds like you may already be familiar with the double dime website from Brunner and Frost, but here it is if anyone else is interested to learn more about 20 cent pieces.
I am familiar with their book and i use it quite a bit. However, i was unaware of how few BF-3's had been found. There is another discussion with the title, "Double Dime Time. Post Your Twenty Cent Pieces!", where somebody said there had only been one found. What am i missing here?
There are relatively few known, because it is a more recent discovery,
after the first version of the attribution guide was published.
So not that many people checked for it when they examined their coins with the original version of the attribution guide.
There is a natural negative feedback with new discoveries.
They are initially rare, because relatively few coins have been checked to match them.
Then people check their coins, hoping to find a rare and hopefully valuable one.
More finds are made in this process, and then the rarity is reduced to account for the new finds.
Yes. Of course, at the time of the discovery coin, there was only one known.
Unfortunately, the guys who were most active on this forum with double dimes are no longer active. @KindaNewish, who was building a collection by die variety, last posted in July 2022. @astrorat (Lane Brunner, one of the coauthors of the double dime book) passed away in August 2022.
I'll ask John Frost (the other coauthor) and see if he has been keeping track of known examples.
@Jordon, I received a nice reply from John Frost.
He agrees this is a BF-3.
He said two more BF-3s have been found, both in Proof holders.
And he is rechecking other 1875 photos and coins, because there may be some BF-1s which were attributed before BF-3 was known.
He is also working on a much expanded second edition of the double dime book!
Comments
What is your question?
Is it a bf2?
The date position looks like it's between a bf2 and bf3. It also has one of the two bf3 die scratches on the reverse.
It does look like the left date which would be either obverse 2 or 3. I think I see the reverse die line for reverse A, but it's hard to say for sure from the pics. If so that would make it BF-3.
It sounds like you may already be familiar with the double dime website from Brunner and Frost, but here it is if anyone else is interested to learn more about 20 cent pieces.
http://www.doubledimes.com/
Here's a few more of it.

How about a couple of decent full obv/rev photos and we'll enlarge as able.
Jim
When a man who is honestly mistaken hears the truth, he will either quit being mistaken or cease to be honest....Abraham Lincoln
Patriotism is supporting your country all the time, and your government when it deserves it.....Mark Twain
Decent pics without the loupe 😉👍
These are the best i could get with my iphone. Thank you all for checking it out for me.

I am familiar with their book and i use it quite a bit. However, i was unaware of how few BF-3's had been found. There is another discussion with the title, "Double Dime Time. Post Your Twenty Cent Pieces!", where somebody said there had only been one found. What am i missing here?
This is the BF-3 date position.
There are relatively few known, because it is a more recent discovery,
after the first version of the attribution guide was published.
So not that many people checked for it when they examined their coins with the original version of the attribution guide.
There is a natural negative feedback with new discoveries.
They are initially rare, because relatively few coins have been checked to match them.
Then people check their coins, hoping to find a rare and hopefully valuable one.
More finds are made in this process, and then the rarity is reduced to account for the new finds.
Thank you, yosclimber. How few are we talkin here?
https://forums.collectors.com/discussion/1033760/double-dime-time-post-your-twenty-cent-pieces/p2
This is a link to the discussion that got my attention. Half way down someone shows the discovery coin and certification letter.
Yes. Of course, at the time of the discovery coin, there was only one known.
Unfortunately, the guys who were most active on this forum with double dimes are no longer active.
@KindaNewish, who was building a collection by die variety, last posted in July 2022.
@astrorat (Lane Brunner, one of the coauthors of the double dime book) passed away in August 2022.
I'll ask John Frost (the other coauthor) and see if he has been keeping track of known examples.
@Jordon, I received a nice reply from John Frost.
He agrees this is a BF-3.
He said two more BF-3s have been found, both in Proof holders.
And he is rechecking other 1875 photos and coins, because there may be some BF-1s which were attributed before BF-3 was known.
He is also working on a much expanded second edition of the double dime book!
Well that is fantastic news. I am really excited.
Thank you all for your expertise and for educating me.