Old brass/copper D hook?...

[mathat]

Old D hook i assume... anyone know where this kind of things might been used?... looks quite well made locking mechanism is spring loaded...

[bsiwula1]

Hello just a guess but possibly a parachute deployment static line jump hook? Kindest regards.

Brian

[mathat]

Jump hook could be could be... actually i was thinking that this might have something do with horses or boats...

[Narcis]

Ship's reeling.

[CBH]

It's a sailboat clip, used on rigging. Sometimes these where used on flags.

[mathat]

oh yes it is sailboat clip thaks a lot! correct name seems to be Snap Shackle...