3 groussus coin from 1596 .

Could someone please coment this 3 groussus 1596 ,Poland coin. The legend on the obverse side has a shorter name - SIG III,and the other part of the inscription. 
Can anyone provide information about the value this type of 3 groussus coin from 1596 ? 

I cannot find this exact subtype in the Iger catalog.

Certainly it should be Bydgoszcz 1596. 

For this date and mint, there are two main subtypes, and your coin is neither.  

The first main subtype (Iger B.96.1) has a bust with the mostly the top surface of the collar showing, and legend SIG III (like yours). The reverse has two shields and two sets of initials (IF SC) at the bottom, and legend with REG POLON 96 or REG POLONI 96.

The second main subtype (Iger B.96.2) has a larger bust with the ruffled edge of the collar very prominent, and legend SIG III or SIGIS III.  The reverse has three shields and three sets of initials (IF SC HR) like yours,  but legend is commonly REG POLON 96 or REGN POLONI 96, both different from yours.

There is a third subtype, Iger B.96.3.g(?).   I think the (?) in the catalog number indicates uncertainty if this is an authorized issue or a counterfeit.

Your reverse appears to be an exact die match for this type (image courtesy of WCN):

But your obverse is different (image courtesy of WCN).  

Specifically, your obverse legend is SIG III D G RE POLO (   )  which is not seen on any version of the 1596 Bydgoscz trojak.  

So we can match half of your coin to a known variety (or counterfeit), but not the other half. 

(Edited to add more information).

Hello ,tdziemia! 

Tank you, for your participation and the extensive research tath you're making on the coin. I fully agree ,tath it's the same mint you have pointed . I'm a bit confused with this coin. Every time when I examine it ,it puzzles me more.The form of the leters G in the inscription in the reverse ,the shape of E letter,and all other details confirms tath maybe the coin was made by the same die as you've mentioned in your post. There are also some extra small differences tath l observed ,but forget to point out in my previous post- additional dot after ARG ,tath does not appear on the specimen from WCN,the shape of the dot between the letters P and R ,looks elongated and the dot after GROS is at higher position .
Is the coin a authentic piece or a counterfeit,

l can't say.  I could point only the weight of the coin - 1,92 g.,which l tink is normal for it state. 
There are also some differences in the legend on the obverse side tath l observed, when l looked the coin under magnify glass and strong light. It seemed me tath the legend could be continuing with POLO x M  ( l tink ?),but this is only a guess.
The text is bit little erased there, so l can say whether this is the case.
 

Another guess for the obverse legend is SIG III D G RE POLON MDL.  

If you agree, I can send your photos to Mr. Kondrat at WCN and see if they would give an opinion.    

I have a strong interest in Polish coins (as you can see 🙂) and some experience with them.

Even if the value of this one is reduced because of the hole, it can be interesting if it turns out to be an unpublished variety.

This is most logical to be the obverse legend . 

It would be very interesting to hear the opinion of WCN,specialists. I had the opportunity to ask for there help on a other unpublished Wilnos ,variety coin ,many yares ago  . I will search through my archive if l can find a image of it. Yes, I observed that you have a specific interest at those type of coins. I'm very glad from this fact and hope tath l can rely on your expertise in my other posts.😀

As it turns out, I did not look closely enough at the 20 sub-types for Bydgoszcz 1596.

Here is the kind reply I received from Mr. Kondrat at WCN:

I think the coin is genuine, but not well preserved. And the type is rather B.96.3.b: https://iger.wcn.pl/coins?type=3283

I understand tath it's very difficult to determine, from wath type is the coin as it's worn out .There are many varieties with which it can be confused as you've mentioned,but you've managed to point the exact one again,thank,you!👍