I guess worst case scenario is that I spend $100 getting a $10 bill graded

That is the only scenario possible if you send it for grading.
Your dealer is an idiot don't listen to them.

1986 issue not 1973
As stated by coinguy no premium for something so minor
All BBE prefix notes are large/small B variety, ten million printed, unless it's in exceptional condition it's a face value note

What was the price of gold in Nov. 2009 ?
The hundred dollar 14K and 22K generally have sold at bullion prices.

Your coins unfortunately are toast.

Both pixie ear

Show us the other side please.
It may be a counterfeit.

That's about 1.5% overweight, not significant.

Google is your friend.
Took less than 30 seconds to find these complete sets of both sizes
https://www.worthpoint.com/worthopedia/ ... 2014139624

Something else.
May have been part of a jewelry item.

Nothing new here.
Your coin was struck by a very worn die which had been created from a worn and damaged hub.
Very common for 1880.
Mint mark size and placement is meaningless as the H was hand punched making each die unique.

Don't believe everything you read on this site pricewise.
Charlton's has these listed at $5-$10 for choice uncirculated.
They sell regularly on eBay for about $12

We need pics of both sides of your coin outside of the plastic baggies.
Is it attracted by a magnet?
How much does it weigh?

Cladding and plating are two entirely different processes.
There are no clad Canadian coins.

Who are we ?
Until some one actually buys this item the only one who is delusional is the seller.

17 is not a plate number, it is position number only.

Your coin is rusting from the inside out.