1930s vintage dead lock daspyl for glass door... man cave item or?

[lotsamagsnbags]

my friend remembers this on her house 1934/35 used over a yale lock for glass door to "dead lock"

I wonder if like old locks and keys if these are of any value, how I would advertise or sell it? looks like its tarnished but no its not copper.  quite heavy... brand name daspyl  thanks

[siddieswans]

From Googling Daspyl was the trade name registered by Plumbing supplier John Danks & Co of Melbourne so it would not be unique to this item. I know there are people who collect old locks and keys but that is usually for their intrinsic design attractiveness or functionality. To me this is just a piece of old metal but it would not cost you anything to try. Collectables - Tools Hardware Locks.