Hong Kong 1960 5 Cent Coin [résolu]

I'm trying to catalogue a 1960 Hong Kong 5 cent peice.  Can someone describe to me what a "security edge" is.  I think that is what this coin has, but I'm not sure.

I do not have any way of adding a picture of the reeded edge, sorry.

This coin page has an image of a security edge: https://en.numista.com/catalogue/pieces8978.html

reeded security edge

Thanks for the image.

That is what I have.  

Citation: "Sjoelund"​

​Thanks Sjoelund