Yes it was smallpox. I was vaccinated against smallpox many times and so have several of those scars. Though some were on top of others.Anyone remember having the circular scar on your upper arm from the smallpox vaccine( I believe it was smallpox and on the left arm)? Do you still have it? Mine vanished many years ago.
My last smallpox vaccination was just about a year before it was declared to be eradicated.