わしジジイ、齢六十にして天賦の才に気付く = I'm old man 60 years old and notice the natural talent
わし じじい よわい ろくじゅう に して てんぷ の さい に きずく
est. Rough estimate based on volume count, reprints and magazine — not an official figure
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections