|Note_en=There are imprints of patents {{Cite patent|US|1016166}} and {{Cite patent|US|1075815}} on clip. Courtesy of Francesco Alfarano. {{PhotoPS|Naples|2019}} | |Note_en=There are imprints of patents {{Cite patent|US|1016166}} and {{Cite patent|US|1075815}} on clip. Courtesy of Francesco Alfarano. {{PhotoPS|Naples|2019}} |