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Sprock” (1895, no. 10159): Friedr. Ern & Co., Weyer b.
Wald. Registry class: 9b. Style: cursive.
Untitled Document German makers and marks
I'm pretty sure it's an Ern. It will be an excellent...

My experience is with the Ator and Crown & Sword.

I don't have any experience with a Sprock but think very highly of the Ern razors I have (5).