My 1809 bust half does not fit in the 7070 hole

My 1809 bust half did not easily fit in the assigned slot in my Dansco 7070. This coin was a downgrade for the coin that previously resided in the slot and fit nicely. Could someone please explain why this coin did not fit AND if you are going to use the term "open collar" in the explanation, please explain what that means?

0
Comments
Open collar - think of the dies as an oreo cookie. The planchet is the cream. If you squeeze hard enough, the cream oozes out the sides. There's nothing there to stop it from expanding.
<< <i>Just file it down... >>
BINGO! File the coin down so it will fit!
don't hit too hard lest it get lodged inside the pipe.
Regards,
Rick
<< <i>This interests me.... is there a difference in dies of that time? Or is it indeed 'open collar'? I have not run into this phenomenon... Cheers, RickO >>
Close collars werent used until 1828. And steam driven presses in '36.
Which die marriage is the coin that won't fit, O.105? And how about an image? I know you aren't an Overton collector, but certain die marriages from different years are known to be oversized, and the oversized ones are always of a similar die state, indicating they were struck at approximately the same time. The planchet doesn't weigh more; it is due to strike anomaly. The press operators may have just come back from morning rum break and were feeling peppy and put extra oomph into each strike; conversely, they may have been feeling fatigued and were coasting as it was nearly lunch break or quitting time. Also, the cause may have been machine related. No one has researched this AFAIK and the actual culprit isn't known. However, the "open collar" was at most indirectly the cause. No one knows exactly what the so-called "open collar" (Moulton now uses a different term) looked like and how it worked, nor does anyone know exactly what/how the feeder/ejector mechanism looked like and how it worked. If Joe Rust was still around, he would be able to research these topics and provide answers/explanations.
<< <i>Close collars werent used until 1828. And steam driven presses in '36. >>
Close collars weren't used on halves until 1836.
OR
60 years into this hobby and I'm still working on my Lincoln set!
Do you see any flat looking spots on the dentiles 180 degrees apart. Also edge lettering overlapping or missing?
It will have a very slight oblong, or pinched look.
Those didn't make it through the edging machines just right, so the edges weren't squeezed properly.
Didn't wanna get me no trade
Never want to be like papa
Working for the boss every night and day
--"Happy", by the Rolling Stones (1972)
``https://ebay.us/m/KxolR5