When is the last time you saw MS-70 for sale
I cannot recall seeing one in a very long time, and I cannot recall seeing a Silver Gilt MS70 offered here apart from the couple times you have mentioned it.
Would love the coin. But personally cannot justify the added premium for it when I don't have any other MS70's to complete a set. Sure you won't have an issue finding a buyer for this though.
On a related, but side note.. there really cannot be many MS70 Cas Silver Gilts out there, 10 or less I would of thought. I'll check up the ANACS #.
Edit: 18 x MS70's total - but that covers more than just the Gilt version.