Medieval avstrian pfennig

Can someone identify this Austrian pfennig for me please?

14mm

0.39g

 As no second picture then guessing it is one-sided. 

Such as this - https://mybeautifulcoins.wordpress.com/2015/10/18/austria-albrecht-v-one-sided-pfennig/ 

  [Obv: AL/B-T - shield in the centre] 

Holy Roman Empire
962–1806
Archiepiscopal Kingdom of Austria 1358–1804
Habsburg Dynasty 930–1918
Albrecht V 1404–1439

One-sided pfennig without date, m. dv. Vienna. 

Obverse: Within a three-arc frame, the coat of arms of Austria – a Gothic triangular shield, crossed twice, gules and argent – ​​in the center. Around the shield, in the notches of the arcs, are the letters AL-Bt, from top to bottom, right to left. Above the junction of the arcs is a six-pointed star.

Reverse: Smooth. 

Catalogues: CNA Fa 6; Luschin Abb. 37.

Silver, 0.417 g, 16 mm. 

Thank you..