Is This Franklin A 1961 FBL?

I will answer by saying "I'm not sure". It is difficult to tell from the pictures, it appears that the lines look a bit weak on the left side. I will say that it appears to be a well struck example, the "Pass and Stow" on the bell is legible. To get FBL designation, the lines must be complete and uninterrupted. That means no contact marks (hits from another coin) breaking the line.
The US Mint made, and makes, Proof sets and Uncirculated Mint sets. The main differences are that in Proof sets, the die used to strike the coins is highly polished, as is the planchet, giving you a vey shiny, mirror like coin. They are also struck at higher pressures, and may be struck more than once to make sure that all the detail is transferred to the coins. The uncirculated Mint sets are made with normal dies and planchets, and until recently were just business strikes pulled out and used to make the sets for collectors.
Hope that helps!

I have to say that when it comes to determining if a Franklin has FBL or not is hard for me to distinguish. I have seen some graded Franklin's with the FBL designation that I didn't agree with and some that I thought should be FBL that where not attributed. Even when I look at the coins from the link Ham provided I am still unsure of how to determine FBL. It almost seems to me as if the attribute is all opinion based unless the bell lines are obviously not full.

Looking at your coin the bell lines appears to be full but there are contact marks that may keep it from being FBL. I'm with coach don saying

I'm on the same boat . but I once read that only the top 3 lines on the bell need to be full. now another source says just the first 2 lines on bottom of bell .
who do we believe ? As far as your coin goes , it's too close to call IMHO.

Close, but not quite just there.

Looks close, but just left of the crack is a spot that the lines are interrupted.....NO