Yes, slightly shrunken to, nice marble. Yes, German made English style, two unfinished pontils and the brighter colors help date it to the late Victorian era i.e. 1870-1910 or there abouts.
"Welcome to Marble Connection"
Lookin like Vacor, others will chime in W their opinions. Again "Welcome"
My best guesses from the Vacor I have posted in the members gallery
LINK :: https://marbleconnection.com/gallery/album/477-vacor-mega-identification/
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Snakeskin Marble, Contemporary, Charles Gibson was the contemporary artist who started making these. Many different artists make them now, i have them W and W/0 signatures.