Not sandcast I know but I know members have other bikes. (If this is not appropriate here Steve please remove, no problem).
Looking to make a replica CB250 'Dream' only available JDM 1968 (Like CB350K0 but with CB72/77 style tank, shocks, Euro fenders and speedo/tacho unit). I think the oval tach/speedo unit is the same as CB450K0 'Bomber'
Made by Nippon Seiki or Fuji Electric.
Don't mind one that needs repair or new face but must have decent bezel ( they are chromed or stainless depending on manufacturer) & serviceable internals.
Have lots of plastic body CB250/350 plastic gauges and metal body CB450K clocks to trade or cash waiting for the right gauge.
Cheers ...Ash