Runestone from Sønder Kirkeby, Falster, Denmark. Now housed at the National Museum of Denmark. According to the display:

This Viking-Age rune stone has been re-shaped as a Medieval church ashlar, this destroyed part of the inscription and the picture of the ship alongside with the "Thor hallow" formula (same-stave runes). 1802 the stone was discovered in the wall of Sønder Kirkeby church.

The translation of the runic inscription provided by the National Museum:

...ser placed this stone in memory of As..., and he met death in Gotland (?). - Thor hallow these runes!