There are quite a few Citrus in Asia that are well known there but not seen in the West much.
Japan has numerous types, other countries have Citrons, Oranges, Mandarins ( Thailand ) that we don't see outside collections.
Is it possible to track down fresh fruit ? Those 2 links seem to be different Citrus types.
They may be different ? Daladan and Daladan Sweet Orange ?
Some of the UC Riverside collection may have been shuffled or mixed up or regrafted as a few older types do not seem to match the original descriptions ?
( The Daladan Sweet Orange dates back to 1930 intro, must have been re propagated to C 35 Citrange which was bred in the 1950's )