I saw some web pics that showed a pair of 6SQ7's and what are probably a pair of 6V6 power tubes.
I didn't see a rectifier tube but I'm reasonably sure there will be one.
Weber makes replacement 6X9 speakers.
I've owned a cattlecar full of little suitcase amps like that over the years.
The only thing I would tell you is I hope you have a good amp tech handy somewhere.
I always had any new (old) amp tech'ed over by a tech before I put it into proper use.
I never saw the sense of buying something like that and not having it in proper operating condition.
But I am fortunate to have an excellent tech nearby for the past 30 years, so that definitely helps.
So I would always figure an additional $200.00 (+/-) for tech fees and parts, maybe speakers too, depending.
Otherwise, I never considered it worth the entry price if the thing wasn't going to be operating and sounding at its peak performance.
Looking at the baffle size, if it were me, I'd probably figure out a way to put a good single 10" in it.
I did a ton of custom baffle replacements back in the day, If it had weird speakers or something I didn't care for, I'd put in whatever my preference was.
I didn't let whatever came stock in it slow me down, I loved modifying those things to suit my own tastes.
The great thing about a lot of those amps once you get them tuned and running right...
Is you can dime the thing and it won't blow you out of the house.
You don't need to worry about attenuators or leaving it on 2 all the time, that is the beauty of those types of amps.
Other than that, looks pretty cool, something I would have bought myself 20-30 years ago.