Just curious what all makes it a trade rifle? The bellflowers, I am told, are an indication. What else?
This class of rifles has begun to interest me. Long time ago I bought a percussion conversion Deringer "smooth rifle", which I think is one made under contract with the US some time after 1815.
The trade rifles followed a certain pattern or stock architecture and had common characteristics or features that the fur trade companies, government, and merchants ordered. The trade rifles/guns that the fur trade companies actually bought and sent west were pretty much less expensive versions the same firearms the builders were selling into the civilian market. Today, most so called trade rifles are these civilian versions as few of the rifles that were actually traded to Indians survive and those that have are highly collectable.
With that caveat, what is the pattern and what are the characteristics of a trade rifle?
The pattern is the classic, late (post-1800) Lancaster longrilfe just like the one that jdm posted pictures of. They were referred to as "Lancaster" or "American" rifles in the fur companies ledgers.
They were generally brass mounted, though AFC did order a few iron mounted trade rifles from JJ Henry. They generally had patch boxes. The trigger guards are often so similar that it is likely that the builders ordered them from the same supplier. They generally had the classic Lancaster side plate like the Drepperd pictured. They often had a checkered wrist. Nearly all had barrel keys. They were sometimes ordered with a wrist inlet and a cheekpiece inlet. These could be brass or silver.
The engraving was generally very basic and sometimes crude unless the rifle was ordered as presentation grade suitable for a chief. Flowers or animals or symbols may have been included in the engraving, but more often simple floral patterns or geometric shapes were engraved.
The patch box finial and engraving varied and sometimes became a trade mark of the builder.
Of course, a trade rifle made by one of the builders mentioned in fur company ledgers and government contracts is a plus, but other builders made the exact same pattern and some probably acted as sub-contractors to the named builder.
And yes, the Office of Indian Trade contracted with Henry Deringer in 1816 for 120 rifles and 60 smoothbore rifles.