metal pencil case; tin pen case
A pencil case made of metal, often a tin box with a hinged lid, popular among schoolchildren.
See also: ペンケース
When I was in elementary school, I used a metal pencil case.
Standard kanji-katakana compound spelling.
Full katakana spelling, common in product names and casual writing.
Compound of 缶 (kan, 'can, tin') and ペンケース (pen kēsu, 'pen case'), a straightforward modern loanword blend.