Good to know, I fund all my coins. This rationale shouldn't affect the premium however, just the demand for the coin.
It affects the premium for me and creates a much higher barrier to entry for the coin. It's fine to fund your own coins but when you fund (initially unfunded) and then try to sell them online it's a lot trickier especially when you expect the price to be increased by minimum X amount where X is the value of the funding.
Unfortunately I can't find the certificate that came with the coin. I'm not really looking to sell right now, just curious of the possible value. If I were to sell, I could contact the maker and ask him if he possibly has a copy of the full address to prove that it's not a vanity address.
That's a bummer, I know some people are comfortable gambling on that amount but without 100% certainty that coin is funded with the stated value I will not be bidding.
A good question at this point in time would be:
How did you fund it without having the certificate? I'm guessing the funding took place when you initially got it before misplacing the COA?