Max,
There were two at the navy yard, and cannonmn had a video not all that long ago that I think still showed them (although I'm not positive on that).
Field Artillery Weapons of the Civil War By James C. Hazlett, Edwin Olmstead, M. Hume Parks: Read the partial paragraph on the
2.9-inch Blakely Rifle, Type 10.
This is the caption to a photo and the text that follows it taken from a website created by Steven Roberts:Captain Alexander Blakely RA
(I'll send the photo to you and Rick by PM)
9 pounder Blakely cavalry or mountain gun 1861
One of two at Washington Navy Yard on museum mountings
It is to Blakely’s “standard” design for small ordnance
A Warren Ripley Picture
The 2.9 inch (actually made as a 3 inch) rifle is a rare piece of artillery in Confederate service. It was constructed by Fawcett Preston and by the Blakely Ordnance Company at the Bear Lane gun manufactory in Southwark. From its size it would have been either a cavalry gun or a mountain gun. It was not built on the same principle as the short 3˝ inch “Confederate” field gun but had a slim jacket and a very large cast-iron trunnion ring. The two remaining Confederate survivors are remarkably similar to their 9 pounder relatives in Peru.
● Details: 2.9 inch (3 inch) bore, firing a 9 pound bolt, 36 inch barrel length overall, six-groove, Scott triangular rifling
Other 2.9 inch Blakely rifle guns were apparently made for the Confederate States Navy or for privateers of small tonnage, much longer and with a breech ring. None seem to have got through the blockade.