Three questions relating to the dating of your PG15 and @drifand PG15
Is it conceivable that your sticker was the product of someone just adding a sticker to your pencil? I believe I’ve seen strips of NOS stickers unused.
Is it possible that the August 1976 date is fairly accurate but only because it was actually made in 1976 and still yet to be “released”? Just me guessing logistics but if a pencil is released early in a given year, at least some of them would’ve had to be made in the prior year.
Do any other pencils share the same mechanism as the PG15 that are already released before 1977?
I don’t understand the benefit of Pentel being incorrect in their dates and I also don’t understand how they would get it wrong considering it would be them holding the files/documentation on their own history.
I think the issue I have with this latest ‘timeline’ is that Pentel has flubbed dates before. The most valuable contribution from this graphic is that Pentel has given a 1978 date for the PG7, which had very skimpy documentation previously – I’d only seen a mention on the Japanese wiki for Pentel, which has since been scrubbed. Other dates on the timeline seem to contradict the research that Jimmy and others have compiled from Pentel’s own published materials from respective eras. My gut says this timeline is a bit ‘lacking in precision’.