1st coronation day of King Vajiralongkorn (I) (381A-385A) -FL(I)- (MNH)

MiNo.3717C - 3820A (Souvenir Sheet 381A-385A) FL(I)Thailand
Opr. and HfPr. with gold foil (2x5); A = perf. K 13 1/4; B = imperforated
BOOK, issue date: 04.05.2020
Picture descriptions:
fav) King Vajiralongkorn in front of the Grand Palace, Royal Coat of Arms
3763 AII 10 B Gold / multicolored fav
3763 B 10 B gold / multicolored fav
3819 A 10 B bronze / multicolored fav
3820 A 10 B silver / multicolored fav
3717 C-3728 C 1B - 100B multicolor fdo
Souvenir Sheet issue with MiNo. 3717C - 3820A
Souvenir Sheet 381 A (150 mm x 135 mm) fdk
Souvenir Sheet 382 B (150 mm x 135 mm) fdl
Souvenir Sheet 383 A (150mm x 135mm) fdm
Souvenir Sheet 384 A (150mm x 135mm) fdn
Souvenir Sheet 385 A (190mm x 155mm) fdo
Quantity: 15,000 pieces
Designer: Mr. Thaneth Ponchaiwong (Thailand Post)
Printer: Cartor Security Printing, France
Conservation Status:
Here as a set "MINT NEVER HINGED (MNH)" perforated and imperforated Souvenir Sheet with Sheet background, nominal and lettering "THAILAND" in English and Thai in "GOLD", "SILVER" and "BRONZE" WITH! A BOOK (app. 1,1KG)
Issue Notice:


At the small sheet, KB(I), MiNo. 3763A, the edge of the sheet shimmers in dark blue metallic.
MiNo. 3763A was issued in 2 versions. However, the two stamps differ only slightly in the edge color:

MiNo. 3763AI on May 4th, 2019 and come from the sheetlet of 10, KB(I)
MiNo. 3763AII on May 4th, 2020 and comes from Souvenir Sheet 381A.
MiNo. 3763B on May 4th, 2020 and comes from Souvenir Sheet 382B
MiNo. 3763A was printed on 160g paper and the embossing on the front was overlaid with gold foil.
MiNo. 3763A and MiNo. 3763B was issued on May 4th, 2020 in Souvenir Sheet 381A and 381B.
From MiNo. 3763A, 2 further versions were issued on May 4th, 2020, in which foils in bronze metallic (MiNo. 3819) and silver metallic (MiNo. 3820A) were used instead of gold metallic foil.
On the occasion of the 1st anniversary of the coronation, the corresponding Souvenir Sheets were issued as a special edition (15,000 pieces each