拍品專文
Crudgington & Baker on page 191 of The British Shotgun Vol.1 mention this particular example as follows:- 'Perhaps it is not unworthy of notice that an example of the use of Horsley retracting firing pins has been encountered on a gun by Lyell of Aberdeen, and it is the only non-Horsley gun which we have seen using this system.' The lack of a patent use-number indicates that the gun was built after the expiry of Horsley's patent