Daiso had both alkaline and traditional carbon-zinc batteries in this size. I chose the latter because it’s for a 1960s device and I think that was the default battery chemistry in the era, plus modern alkaline batteries seem very prone to leaking when left alone for 10 years.
I got 6 rechargable D cells for a flashlight that broke shortly after. Now I have no use for them, I just top them up yearly.
1 rechargeable cost as much as the 8 disposables I needed and I also have nothing else that uses them.