Same markings as one of the photos in that link. After a bit of searching, I came on to this link https://www.pmulcahy.com/bolt-action...n_ba_spr_k.htm. Maybe of some help, as reading this makes yours more likely to be a variation of the Model 300. Bloody shame its missing the bolt, as they are a brilliant piece of Germany workmanship and yours looks very pretty.
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