Herrmann Dolling Jr (1862-1923) worked in Markneukirchen, Germany. He was trained by various masters, including his father, and joined the family business in 1886.
Your violin must be an example of his earlier, independent work, as the later violins made in the company's workshop, is derivative of the Italian masters.
If it is in very good condition with very good tone, its current retail (replacement or insurance) value is approximately $3,500. If you were to sell it, you could expect to get the fair market (private sale or auction) value of approximately 40% of the retail amount, or $1,400, depending on location and actual condition.
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