Casio G-Shock was founded in 1983 and 2018 is G-Shock 35th Anniversary. The Big Bang Black collection consists of five G-SHOCK models featured in matte black.
Here are the international model numbers, japan model numbers and recommended prices.
GA-135A-1A
GG-1035A-1A
GA-735A-1A
GA-835A-1A
http://world.g-shock.com/35th/en/
GW-5035A-1JR 44000yen
GA-135A-1AJR 20000yen
GG-1035A-1AJR 43000yen
GA-735A-1AJR 19500yen
GA-835A-1AJR 20000yen
http://g-shock.jp/products/35th/
GW-5035A-1JR is modeled after the first G-Shock and enhanced with modern technology like tough solar and multi band 6. This is definitely a must have for G-shock collectors. Unfortunately, GW-5035A-1JR is a Japan only model and there is no international version of it. So fans who want to buy GW-5035A-1JR can only get it in Japan.