Numismatic 1866 Vs. 1 Oz. Eagle Question

Hello, all,

I'm new to collecting (1 yr old) and I'm beginning for two reasons, security first, investment second. I, quite frankly, as many others want to have my 'money' in solid rather than paper form. So for security due to the uncertainty of the economy, I got into gold and that is my primary purpose. I want to always have 'real' money.

But having begun with this purpose, I have become intrigued with this and the history behind it. As of this point, I'm mostly collecting pieces that I simply like for their appearance. I am, in that sense, moving into the realm of 'collecting.'

With all of this comes my first post and question. I am about to make a purchase and need some advice. I laid this groundwork, for both figure in to this decision. I have the chance to pick up an 1866 $20 Double Eagle for $2900. Sounds nice, I suppose. But the practical 'survivalman' inside of me tells me that this is over $1k over gold price and I have to question if it's the right thing. My other option is a simple 1 oz. Gold Eagle for $1825. I think that if the shtf, a collector's piece is worth only what the gold content really is. At that point, who cares if it's a collector? I'll only get what it's worth, regardless of 'collector value.'

Things I have to consider are these (and you all know this): buyback/resell value, which will hold its value the best, which has a better chance to increase, etc. Basically, which is the most secure and I can be most sure I won't lose my money.

Sorry for the length, but this is my first time. Thank you all for your anticipated help.