Unknown Parvus Hungary ?

[pinpoint]

Friendly ask for help to determine this unknown medieval coin.
Diam. 12 mm / 0,36 gr. / Silver
It looks like a variant of a : Parvus , Zsigmond ( 1387-1437) but we see on this coins (on the site with the shield ):
one letter right and one letter left beside the shield .( place of minting ??)
On the rev. we see : a cross with 2 letters between the legs and 4 crowns
Any info or Ref. nr. is welcome

Greetz from The Netherlands , Pinpoint

[Otakar]

Hallo pinpoint!
Vermutlich ist das Huszar 580. Parvus Sigismund von Luxemburg. Schildseite: Buchstaben A-V-R (1387 - 1427)
Reversseite: Gleicharmiges Kreuz, Münzzeichen im Feld - leider schlecht zu sehen, vermutlich R, I?)
Bitte bessere Bilder anfordern! (Bild beschneiden und anschließend vergrößern)
LG
Otakar

[pinpoint]

Hello Otakar ,

Thanks again for your exellent help !
I ask already for better pictures but till now the finder don't succeed to make bettter .

Greetz , Pinpoint