Hand engraved lettering Denga? 0

[Ratzie33]

Look closely at the denomination.

[Ratzie33]

[Ratzie33]

I may be wrong but is that the Petrov sky mint Mark?

[Ratzie33]

It also looks like there are two initials inside the star but I can’t make them out

[Ratzie33]

There appears to be filigree inside the lettering 

[Ratzie33]

Look at the left lower portion of the column of the H, it looks like it was carved into a 3 sided pillar 

[RWB]

St. Petersburg Mint. There's nothing in the star. Here's a similar coin with a different moneyer (from NGC):

[Just Bob]

I am not convinced that that OP's coin is genuine.

[RWB]

4 hours ago, Just Bob said:

I am not convinced that that OP's coin is genuine.

Shhhhhh....don't give away the secret.....