Medieval coin [решено]

I found this coin which seems old.

The lettering seems to be 

H·B

I've made some digital sketches that may help.

 May not be a coin but a lead seal or hop picker token … 

 Here is similar with PC initials 

https://www.facebook.com/groups/1544655495827569/posts/3726446734315090/ 

 https://thetokensociety.org.uk/lead-tokens/ 

 Also - https://glevumdetecting.com/tokens/lead.htm 

 Lastly