The 742 is very difficult to find, see: Battery Wholesale Distributors on eBay.com if you really need one of these, they have carried them recently.
4, 4F, 4F1, 21, 462, 4816, 6430, Eveready 742, Exell 742, P94, P94A, VS004,
not to scale.
Height × Width × Length.
|Chemical Composition.||Nominal Voltage.|
|742.||Data unavailable at this time|
|Carbon Zinc||1.5 volts.|