Couldn't find it in the list but looks like many of the German States or Austria or Spain of similar size for the same time period. The checkers on the shield reminds me of Bavaria.
Bishopric of Regensburg
Johann III 1507-1538
Drier of 1529 (dates of 1521, 1524 to 1535).
obv: Mit 4 Halbbögen verziertes vierfeldiges Wappen, Schrägbalken, pfälzischer Löwe, bayrische Wecken, Schrägbalken.
rev: I in Rhombus, r. und l. Stern.
obv: With four semi-arches decorated four-field coat of arms, sloping beams, Palatine lion, Bavarian lozenge, sloping beams.
rev: I in Rhombus, r. and l. Star (made of two intersecting lines).
taken from: Schulten 1974: Deutsche Münzen aus der Zeit Karls V. (1484-1559) p307 #2842.