How much are you seeking? Just because there are less than 10 known doesn't mean there are anywhere near that amount
Where are you getting the knowledge that only 10 are known?
Why should these have a high collectible value? Just because they are old and scarce doesn't mean they should be worth that much over spot
I appreciate your questions and will do my best to answer them. I play a small part with
www.allengelhard.com in documenting these types of silver ingots. Part of that process involves knowing each ingot that has come up for sale and recording the serial numbers. After a while a database is build and can then provide infornation. I am friendly with most of the biggest collectors around the world who have significant investment in this market.
Anyone who is familar with vintage poured silver bar's knows the market is on absolute fire right now. Older US mint 5oz ingots are selling in the upwards of $3000.00 a piece. There are countless recorded sales on allengelhard.com to support these numbers. As well as eBay and
www.worthpoint.com.
The poured silver collectable market carries massive premiums similar to those of the crypto collectable market. Which is why I have been drawn into the crypto market.
The 5kg ingot values around $900 per kilo. The 1000g Harrington DCL ingots are priced at $1000 a piece. Please check out
www.allengelhard.com if you have anymore questions. Most of the answers will be there.
Thank you