Junk yards always seem to have them. Have you tried there?

You say you "have tried CL" do you mean browsing in the 'for sale' or 'free' section or did you post that you are looking for one to buy. Someone may have one laying around and wishing someone could haul it away. They are really heavy and cumbersome. Or someone may be planning a remodel and will jump at the chance to have you come and get theirs. Posting in the 'wanted' section may bring results.

I know nothing about the NJ area but if there are neighborhoods that are undergoing rehab, you may be able to slueth one out by talking to workmen at jobsites.

Architectural salvage places should have them. The one I go to in Baltimore sells them rather cheaply - the plain ones are $6 a fin and the decorative $12. I think they are called fins???

Thanks for these ideas!

i just removed one due to kitchen remodeling. it's a beauty! our house was built in 1819 so it would be close to what you are looking for. it is one of the shorter ones but quite long...15 sections. i will provide exact dimensions upon request. it is quite ornate with decorative scrollings. works great too! no leaks.