Bidspirit auction | Anonymous portrait painter, mid-19t

Anonymous portrait painter, mid-19t - Anonymous portrait painter, mid-19th century, three portraits (one man, two women) from the Richter family, oil on painting board, unsigned, inscribed on the reverse by a Dr. Firz Müller in the 1930s/40s with family information, approx. 36 x 29 cm, framed to 38 x 31.5 cm