I use a Zeiss Ikon Ikophot from the 1960s and a Leningrad from the 1970s and both are fine despite their age. Neither needs a battery and both agree with my modern SLRs. If you buy a 1950s light meter, beware that the ASA (aka ISO) scale changed drastically in the mid/late 1950s.

I paid around 5.00 for each - certainly less than 10.00 including postage.