Two Benji Enders In A Brinks Box! How Many More Did I Find?

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Author	Replies: 8 / Views: 1,192
NorthShoreMA Valued Member United States 168 Posts	Posted 02/24/2025 3:05 pm Not 20 (a statistically-reasonably outcome). Not even 10... One -- a 1964 Kennedy half dollar! This outcome is so unlikely if the kind of coins in that box were randomly distributed that it I wonder if the Benjamin Franklin half dollars were "salted" in those positions. Perhaps I am being paranoid about the intentions of the employees where the coins were rolled. But can someone purposely place an interesting coin at the end of a Brinks roll? Edited by NorthShoreMA 02/24/2025 3:07 pm Report this Post to the Staff

jbuck Moderator United States 187446 Posts	Posted 02/24/2025 3:15 pm Well, two Franklins and a Kennedy is still a win. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
Errers and Varietys Bedrock of the Community United States 73559 Posts	Posted 02/24/2025 4:31 pm Nice finds! Finding silver is always a win. Errers and Varietys. Report this Post to the Staff
cabowabo Pillar of the Community United States 1064 Posts	Posted 02/24/2025 4:54 pm That is very cool NorthShore. Seeing those enders can create a lot of nervous anticipation for me that is kind of why I do this. Not so much for the value but rather the thrill of the hunt. Congrats Report this Post to the Staff
Marv65 Bedrock of the Community United States 10470 Posts	Posted 02/24/2025 5:08 pm What a great start! Report this Post to the Staff
NorthShoreMA Valued Member United States 168 Posts	Posted 02/24/2025 5:36 pm I agree with cabowabo that finding silver coins is its own reward: i.e., "The thrill of the hunt". Nevertheless, I was sorely disappointed finding only one more valuable coin in this box after I anticipated finding one (or more) Liberty Walking, Benjamin Franklin, or 90% silver Kennedy half dollars in every couple of rolls that I unwrapped. Phooey on statistics based on enders... Report this Post to the Staff
John77 Pillar of the Community United States 2910 Posts	Posted 02/24/2025 8:53 pm I think you might want to buy a lottery ticket... statistically, given a normal distribution, what the rest of the box produced is next to an impossibility. CRH Nickeloholic. 1,600,000 nickels searched in eight years! Have found FOUR complete Jefferson sets! Report this Post to the Staff
NorthShoreMA Valued Member United States 168 Posts	Posted 02/24/2025 11:00 pm John77 noted that finding only one more silver coin in a box with two silver "enders" statistically is almost impossible. If the expected outcome is 20 silver coins, the probability of finding >3 silver coins is >99.96%: i.e., the odds of finding three or fewer silver coins in that kind of box is one in 3,400 assuming they are randomly distributed. That's why I wonder if someone may have "salted" the Benjis. Two months ago I described finding only 13 silver half dollars in a box with three silver "enders" -- another disappointing result that is statistically unlikely. An alternative explanation is that because silver half dollars are slightly heavier than cupro-nickel coins, there may be tendency for silver coins to wind up at one end of a roll. However, I don't know enough about how coin rolls are made to evaluate this explanation. Furthermore, last month I described finding 18 silver half dollars in a Loomis box with no silver "enders". So it seems that silver "enders" are not a good leading indicator of what a box contains. What is the experience of other CRHs? Edited by NorthShoreMA 02/24/2025 11:03 pm Report this Post to the Staff
John77 Pillar of the Community United States 2910 Posts	Posted 02/25/2025 07:20 am Yes, I remember that other box... not an impossibility statistically, but definitely an outlier with all other things taken equally. Honestly, I think the best explanation is that this last box was salted. I get the feeling either it was intentional or unintentional - perhaps an employee had those two rolls with the Benji enders put away and someone (maybe a manager) found them and dumped them into the box feeder... Most of my experience with hoards in MWR CRH is in the nickel department... my boxes have usually held close to the expected ratios based on enders and/or sampling of 1/5 of the box of rolls... my nickel box from a few weeks ago is the latest evidence of their consistency. Got 1/2 the box and it was pretty good... so I rushed to the bank early the next morning to get the other half and it was every bit as good: http://goccf.com/t/24785&whichpage=872#4244392 CRH Nickeloholic. 1,600,000 nickels searched in eight years! Have found FOUR complete Jefferson sets! Edited by John77 02/25/2025 07:22 am Report this Post to the Staff
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