Ok a few points.
Mercury dimes did not start protection until 1916 so I assume you made a typo. If you have dimes from 1911 those are barber dimes.
A few questions:
1) How are these coins stored? Like for example are the Morgans or 'silver quarters' in rolls? Books?
2) Are all the coins raw?
'raw' means not graded. A graded coin will be in a plastic slab. It could say ANA, PCGS. NGC. IGC, ANACS and should give a grade.
3) ."..value old bills .."
When you say 'old' what do you mean? Currency is not something I collect a lot of. I am much more of a coin collector but I know enough to give an opinion.
The SLQ being in bad shape is very common. They were a bad series and wear out very easily.
It is unlike you have one but the 1916 SLQ is an extremely rare coin and even in very poor condition brings 4 digit numbers. Again is very UNLIKELY you have one but a 1916 SLQ can be identified even with the date so worn off you can't see.
I look forward to more information.