1899 China HKS Mint $1 certificate, 1913 China HKS mint $100 certificates

I've recently come into several interesting pieces and I'm trying to valuate them as well as find places to sell them. The pieces are listed below:

(1) 1899 China - Hong Kong - Shanghai Banking Corporation $1 certificate - mint

(4) 1913 China - Hong Kong - Shanghai Banking Corporation $100 certificates (they say all four can be redeemed for $500). These are also in mint condition

From what I've seen the $1 note is worth around $1000 and the 1913 certificates are worth between $2000-$5000. That's what it seems.

Any help would be appreciated. I should have pictures of these by tomorrow