On the older Anschutz thumbhole stocks, they do not come with a cheek adjuster. The below adaptation solves the problem of not having an adjustable cheekpiece. This cheekpiece is adjustable for front & rear tilt, cast on & cast off, and cheek height. It can also be adapted to the thumbhole stocks that have the cheek riser, but are difficult to use.
Doan Trevor Custom Rifle Building 
To each his own..
My most-recent profit-making project at: https://amzn.to/2PVv70t expatiate on said statement
Sorry, John but I only put them in the stocks I build.
Ok thanks ,
Do you sell stocks?, I’ve got a 1813 Anshutz that needs one , only prone shooting
Cheers
John
Hi John- Unfortunately, I do not ship outside the US. I wish I could. Cheers, Doan