Mannentsūhō from 1988 Auction

Hello Numista,

I bought this coin off EBay a few months back and I‘d like more information about it.

N#123903

I understand it to be a Mannentsūhō but I’m not sure if it’s an original or a later copy. Would anyone happen to have a copy of the auction catalogue associated with this piece (info in picture)? I think the answer to my question may reside within the item description. 
 

Thank you for your consideration,

Harrison

The caligraphy doesn't look like any rubbing I have seen, similar but different in certain details. But I am not an expert in the 12 ancient coin series and there are several varieties. If they all are genuine I can't say, I would need to find a list with excavation finds.