Happy New Year all!

That bolt might work, but it is not correct. I posted a picture of the correct bolt above.

Unfortunately, I do not own a Lee Metford MkI, so I cannot know for certain if a later bolt will work, though it seems like it would. Maybe if Tinker wants to meet up, I could try a MLM MkII bolt in the action and see if it works and headspaces. Has anyone tried it?

I would not do it though.

Besides, in addition to being a later model of bolt, the one on auction is for a carbine (swept forward and flattened handle). The carbine was still several years away from being invented when Tinker's action was made. Also, the carbine bolt has the new-fangled cocking piece safety, and Tinker's has the "old school" lever safety on the action. He couldn't be seen in decent company wearing TWO safeties, now could he?

The auction bolt is a good one, however, for someone who needs it for a MLM or MLE carbine, or for a Lee Speed sporter, which it could pass for. If you were to use this one for a built-up, "bitsa" Lee Speed imitation, well... the carbine style bolt looks stylish for sure, but unless you really plan to wear it in a saddle scabbard, it offers no ergonomic advantage over a regular bolt when actually shooting. Note that it is missing the bolt cover.
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So, does anyone know what the stamp of the V in a circle might mean?