The barrels are a crolle damascus. The Perron and the Crown over what appears to be an M are Belgian proof marks. That Crown M would be a very early inspector's mark. That style was used from 1853-1877.
According to Johnson's "Gunmakers of Illinois" Vol II:
Hasdell worked at 150 St John Road, London until he immigrated to Chicago. From 1871-1887 he was located at 20 E Madison.
In 1881 he was challenged in the American Field by LC Smith of Baker guns. LC Smith wrote a public letter in which he wagered $50 that his guns had a better choke than Hasdell.
Hasell made long taper chokes.
There is at least one example of a WC Scott with Hasdell's name on the barrels. An old ad shows him offering guns for $100-$300 (very expensive). He apparently had a real following in Chicago.
I am sure Phail can add much more.
So apparently Mr Hasdell could source both English and Belgian parts / guns. The Philadelphia Exposition of 1876 opened the door to many suppliers.
Pete
