If your beehive rear light car was delivered in '56 through March '57 You got the oil temp ( with specific temperature markings) and "gasoline text gauge...
March through June '57 they delivered a mix of oil temp specific and gasolin/tank gauges... Eventually migrating by summer '57 to the better known generic oil temp ( with no temperature markings) and "tank " gauges on all cars euro and us delivery.
my fathers Spanish delivered February '57 356 came with the gague markings referenced on the left.
hope this helps... My original gauges are February '57 stamped... So the temp specific oil-temp and gasolin (one off year) markings are correct for the gauge. I actually seeked out these specific gauges... I liked the "gasolin" marking... And wanted the temp markings on the gauge.
hope this helps!
cheers