this type of VIN is what I would expect(but don't know for certain) to see on a Toyota that was locally produced in one form or the other, some were CDK(complete knock down kits) and a few other types that had more local product in it, like beds, axles, engines. But yours looks more Japanese, I than SA.
I do spy an ultra rare 5 lug rear axle, with free spinning 4th lug.....and the lugs nuts appear to never have been removed since they were painted, I would almost expect the tires to be original, quite a time capsule really
some fun history thanks to UZJ.....on ECASA
1965
September
Ecasa of Costa Rica begins CKD assembly of Corona and Land Cruiser vehicles
1973
April
Equity stake (20%) acquired in Ecasa of Costa Rica
May
Order for 1,873 Corolla, Land Cruiser, and other vehicles received from the Cuban government
as a side note...
Fidel and I on a trip to Angola in the early 70's, he was enamored with the 1964 FJ40 they had loaned us. When he got home he vowed to figure out how sneak some in without Leonid finding out, he was sick of the crap the Soviets stuck him with
this mud member has a 77 ECASA HJ45
https://forum.ih8mud.com/threads/h-parts-wishlist-for-hj45.761630/
It is a bit confusing in this area. Data plates (which could be easily forged for about $40), are more of a US thing. Most of Latin America didn't use the plates like they are used in the States. The typical door frame data plate is a US thing.