With his glasses off, it looks more solid, figuratively. More rooted in the spirit world. That's probably the effect of the Seal of Solomon, since he included that in his superseding version. Sadde's own seal doesn't have anything like the kind of oomph it'd need to be visible at a glance.

Yet.

"Thank you. I would say I'm glad to do business with you but I'm not, I'm sorry I had to hurt you to cause this. Hopefully I will be able to work towards a world where people don't gratuitously hurt each other." And he walks out.

He is in what's recognizably the same woods around Jacob's Bell. The landscape features are the same, the trees aren't, and it's colder than before.

Naturally. And now he has a magical club and—what's Bob's state?

Nearly empty. He used a lot of it today, or will in the future depending on point of view.

...yeah. He will cherish and take care of Bob like his own child. Is the fossilised goblin still there?

Not yet.

Just how far—

He'll fix that. Worst-case scenario he will have to reinvent chronomancy from scratch to do it, but the woods changed little enough that Jacob's Bell probably still (already?) exists. He cleans up the club as best he can and—" Are you sapient? Perhaps you used to be a goblin and stuff?"

If so, it's doing a very good impression of an inanimate object.

"If you are or used to be a goblin, I could free you if you sworn that same oath I gave the thing that tried to eat me."

...sounds hypothetical. Is that an offer?

Yes it is indeed an offer—" Where by 'same oath' I mean the more complex version I have for smarter things, if you'd like to hear me out."

It continues doing its inanimate object impression.

So he spells out the more complex version of the oath, just in case.

That's more permissive than what the monster agreed to. More exceptions and the goblin can actually understand the implications about forcing others to swear the same.
The weapon morphs into an ugly and pale humanoid, nearly the size of the goblin Sadde fought earlier, and it runs into the woods.

(Fortunately. Would've been pretty stupid to be talking to a regular club.)

"Thank you for your help!" he calls after the goblin.

Okay, now it's back to Jacob's Bell, probably.

Jacob's Bell is smaller than before but has in fact been founded. No one here is recognizable even if there's a good chance they have family members he knows.

Hmm. He—probably doesn't want to actually cause a paradox, so, interacting with lots of people is out. Talking to the Behaims might be just straightforwardly the best choice but on the other hand that carries a significant risk of lots of people knowing about him. Perhaps he should just find head Behaim and hope they're smart enough to not destroy the future?

...yeah that's. Probably the best idea.

He looks for Behaims.

The Behaim house is in the same place it will have always been.

The door opens shortly after he knocks. "Malcolm Behaim. What can I do for you?"

"Hi. Erm, can I talk to whoever currently heads the, ah, family? I can't lie and it is somewhat important and I expect of interest," he says, hoping the meaning is caught.

"That's me. Why don't you come on in, and can I get you something to eat or drink while you're here?"

Hospitality rules, of course. "Yes, I think I'll accept something to drink, thank you."

"Juice, milk, water, you don't look old enough I can offer you a drink.

What's your name, by the way?"

"Juice's fine, any, and I'm Sadde. Sadde Woods. Pleased to meet you."

Malcolm pours a glass of cranberry juice, and another for himself.

"Pleased to meet you too. Welcome to Jacob's Bell."