attempting to complete as much as I can on this half dollar series. Has anyone here done this? My goal is to have a good balance between quality and budget. I realize there will be at least 3 or 4 of these dates I will probably never see. And probably the 80s i wont fill

Hello,
I am writing to you because I have a very special piece that I would like to share and give visibility to. It is a 4 Reales coin of Philip V dated 1729, minted in Madrid (crowned M mint mark), which I have attached in the pictures.
The auction house Áureo & Calicó has examined it and confirmed that it appears to be completely genuine. Furthermore, it is an unlisted (unpublished) piece in standard reference catalogs for this mint and date, making its discovery a major event in Spanish numismatics.
It is scheduled to be auctioned next March. We would love for collectors, historians, and experts around the world to learn about this piece ahead of the sale.
Would you be interested in publishing or sharing some information about this discovery?
Best regards,

Hello everyone. I picked up a lot of barber dimes and I ran across this 1912. I am assuming this is just some form of post mint damage. But I have never seen such a circle that caused a recess within the entire diameter of the circle.

A quarter fell out of a vending machine after I paid with card and it's almost fully black and won't rub off, is this a print error or just natural wear and tear?

Hello all, I am well versed in common rare and valuable US FR notes, such as fancy notes with repeated digits, radial patterns, Trinaries, etc, and have sold a few repeater bills to my local numismatic shop for a solid profit. Rarely do I ever see any bill older than the 90’s, especially a $20 out in the wild, so I figured I would consult you folks if ya have any info on possible value, whether if it has any numismatic or collector value that would be awesome to know, or if it’s just worth face or not worth selling ($22-$24 value, would be easier and smarter to just spend it as a $20) anything is appreciated!

I see there is no online database from Valcambi to search their serial numbers. But does anyone have any idea when this would be from? Not sure how many they make per year but feels like a pretty low SN to me. Does this add any kind of collectors premium to it?

Also ended up getting this 1939 silver German 2 Reichsmark

Picked up a Nazi Germany 6 Reichspfennig and a 1943 German 1 Reichspfennig coin.