Llechwedd Slate Caverns
25th May 1982. 150th Anniversary of the Birth of Lewis Carroll.
Designer: Ivor Wynne Jones. Printer: The Craig-y-Don Printing Works, Llandudno. Sheets of 20. Perf.: Rouletted 7. Number Printed: 4,000 of each.
5p
Black and purple. Alice.
5c
Black and purple. Alice.
 
Se-tenant pair.

25th May 1983. Engineering Achievements.
Designer: Ivor Wynne Jones and WH Brown. Printer: The Craig-y-Don Printing Works, Llandudno. Sheets of 20. Perf.: Rouletted 7. Number Printed: 4,000 of each.
5p
Blue and red. Electric Locomotive.
5p
Blue and red. Slate Dressing Machine.
 
Block of 4.

6th July 1983. Honouring the Regiments of Meirionmydd.
Designer: Ivor Wynne Jones and WH Brown. Printer: The Craig-y-Don Printing Works, Llandudno. Sheets of 20. Perf.: Rouletted 7. Number Printed: 4,000 of each.
5p
Red an blue. Electric Locomotive.
5p
Red and blue. Slate Dressing Machine.
 
Block of 4.

30th May 1985. Engineering Achievements.
Designer: Ivor Wynne Jones and WH Brown. Printer: The Craig-y-Don Printing Works, Llandudno. Sheets of 20. Perf.: Rouletted 7. Number Printed: 5,000 of each.
5p
Brown and green. Electric Locomotive.
5p
Blue and red. Slate Dressing Machine.
 
Block of 4.

18th April 1986. 150 Years of Slate Mining 1836-1986.
Designer: WH Brown. Printer: The Craig-y-Don Printing Works, Llandudno. Sheets of 20. Perf.: Rouletted 7. Number Printed: Locomotive (English text) and Wagons (Welsh text): 4,800; Locomotive (Welsh text) and Wagons (English text): 3,200 of each.
10p
Green and red. Steam Locomotive (English text).
10p
Green and red. Horse-drawn Slate Wagons (Welsh text).
10p
Green and red. Steam Locomotive (Welsh text).
10p
Green and red. Horse-drawn Slate Wagons (English text).
 
Block of 4.