Forgeries - Now Vs. Past

I just purchased a Voyageur Stamp Album that has quite a few stamps in it from the 60's and prior - stamps which were purchased in the 50's and 60's. I am wondering if forgeries were more common or less common back then as compared to now. Judging by the album's contents, I would say that this was a knowledgeable stamp collector, but a good forgery is a good forgery that might not be easily detectable. Thank you!

Very few forgeries back then as compared to now.

Thank you!

If you are talking about common stamps, few forgeries, but for some things like Washington-Franklin coils there are a ton of fakes.

And classic issues of the world.

My experience has been that fakes abound in any area with stamps of value. There is always someone willing to alter good stamps in order to try to get a payday. Here are some examples from my area of collecting.

Somehow misplaced vol. I

Not counting the Chinese forever knockoffs.