GERMAN STATES NEUSS 8 Heller, Fettmännchen = 4 Pfennig MB# 52 (ca1583)
Specifications Composition: Silver Design Obverse: 4-fold arms, value '8' in lower right quarter of arms Obverse Legend: MO. NO. CIVITA. NOVES. Reverse: Crowned imperial eagle, or on breast, titles of Rudolf II Notes Note: Ref. N#78-79.
I found this Russian forum where someone is trying to identify a coin that looks like yours and from what I can decipher via translate I think they are calling it the Neuss coin I referenced above-