Raku crackle glazed lamp bases

I'm trying to ID these lamp bases, and have not had any luck despite the fact that one is signed.

These are almost certainly by the same potter and appear to be a pair, despite the difference in size and slight difference in the style of base. Lamp hardware looks fairly old. I can't make out the signature, and it's driving me mad.

Thanks for your help. Fingers crossed.

Looks like 'Beck ' or 'Becks' to me.