Examples of the type

1887-Sep-14 – (en) Signature: Renieris
2024 October 17 World Paper Money Signature® Auction #4052, lot 24181. PMG VG10.
https://currency.ha.com/itm/world-currency/greece-national-bank-of-greece-25-drachmai-1888-97-pick-38-pmg-very-good-10/a/4052-24181.s?ic4=ListView-ShortDescription-071515
1890-May-06 – (en) Signature: Renieris
191 × 92 mm
https://www.kenom.de/objekt/record_DE-MUS-106425_kenom_343843/1/-/
https://hdl.handle.net/428894.vzg/8cc67f38-252a-49e9-bd0b-bd274e8630d5
1892-Feb-25 – (en) Signature: Kalligas
2020 March Auction, session 1, lot 66529. PMG F12 (minor repairs).
https://www.lynknight.com/items/1142357
1892-Jul-12 – (en) Signature: Kalligas
Auction 23231, lot 381. 07 Dec 2023. Left vignette cut out of note, otherwise XF.
https://live.spink.com/lots/view/4-BYIHNX/national-bank-of-greece-25-drachmai-12th-july-1892-serial-number-7648-pick-38-
1893-Sep-26 – (en) Signature: Kalligas
https://greekcoins-eshop.gr/product/ethniki-trapeza-25-drachmes-1893-pmg-vf20-rrr/
1894-Nov-24 – (en) Signature: Kalligas (month as "9βρίου")
https://greekcoins-eshop.gr/product/ellada-chartonomisma-25-drachmes-1894-ethniki-trapeza/
1895-May-28 – (en) Signature: Kalligas
https://www.karamitsos.com/product/lot-06349-59/
Live Internet Auction 26, lot 06349. PMG F12.