I believe there is also a rare 1890 date variety which is not documented by Gouby.
The 9 is clearly higher than the numeral 8. It also seems to be rotated clockwise a little and, perhaps, has a longer tail.
Have been looking for a decent one of these on ebay for years.
Have only seen a couple of lower grade ones, and I'm thinking the variety is 'rare', rather than 'scarce' as per Gouby.
I've been searching for one of these for years.....................
https://www.ebay.co.uk/itm/365916219444?itmmeta=01K7BV2E3H5S44ATWR28SSQMX7&hash=item55324e6834:g:VfgAAeSwO~No6sCp&itmprp=enc%3AAQAKAAAA4FkggFvd1GGDu0w3yXCmi1fniTEmULTgZoT%2BvNdgoHck15q%2F4yFunnC8W1AV%2BZHUId%2BN5bYtfg%2FU2A1uMec%2BvYrJIrxP5xbJXjE8GqBvQWwUVgS8t1QsXwGDqOi%2FJZsi4P0GIXyLKxjBYb3IZP4F%2BdZ8V3AIf9stOLgmQHSNZ3kmEgB8Ebd5jh7yf8bRtvp1Asc98h6RLMQugz5cnlJTsHXvuM22fIswWKbmtXABfN51fyOIWeM5OqO0Urj%2BsOSyDHSnk1E1FeQafThezKEeQ155pEVa8N62Df%2BDSNZ2wxfT|tkp%3ABk9SR4Diifu6Zg