These are always cast hollow when they are large as these are mantrid, so they had to be cored.
The metals are not cheap these days, not when copper runs around $4 a pound- I remember when it was 60 cents a pound.
Tin is around $12, zinc about $1.
These were cetainly made overseas, almost definitely in China, and almost certainly mostly brass - most people could never tell the difference, especially with a good patina as these have.
I have found a number of these in Google searching that appear to be linked to a bunch of "live auction" sites I found looking up the alleged artist's names on the bases.
Of course these "live auctions" are just scammy BS, they are connected- many of them are- to ebay, and others, to firms wanting to sell price-guide type antique subscriptions- they have the "sold for" prices all hidden and the usual "sign in to see what this sold for" come-on to get you to register and buy a subscription to their price guide.
One of them- liveauctioneers.com
Has one of the pieces which came today, listed, it's the same bronze Arab on a horse;
After F. PAILLET. Arabe BronzeSign In to see what this sold for
After FERNAND PALLET (French, 1850 - 1918) Arabe Bronze sculpture 14 x 5 1/2 x 10 1/2 inches not including base Signed in bronze Good condition
Estimate $1,500 - $2,000
Starting Bid $750
But if you search for the artist's name like this in Google-
You find almost nothing on him except multitudes of links to all these "live auction" places, at least the first 11 links all point to no less than 2 of these places.
And what an amazing coincidence, this other "live" auctioneer site has the exact same bronze, and even the "lot" number is in the 800's like the other, oh and it was an "estate auction" sure
Michaan's AuctionsSold for: 176 USD
14 x 5.50 x 10.50 inches
Medium: Bronze sculpture
Realized Price: Login/Upgrade to view result
Estimate: Login/Upgrade to view estimates
Lot Number: 816
Auction House: Michaan's Auctions
Event Name: Estate Auction
Date: Jan 7, 2012
But be that all as it may, and the fact they are copies/knock-offs of 19th century works, most likely not even directly copied via a mold but by photos as an "after," these are very heavy, good quality pieces that seriously compete with the better bronzes of this size/type I've seen.
The horse and the bighorn ram were very well done.
The Arab on the horse is very detailed and well done with the exception of the traces and the rifle's strap- both done using wire, which more properly and realistically should have been done with thin flat metal- not wire! Actually the Ebay pictures SHOW flat metal, but the cast I have used wire and I plan to let the seller know I'm not as happy about that.
It weighs 20#