When Congress adopted ERISA, they wanted to provide for an orderly appeals process that would encourage employers and employees to agree to settle benefits. While this system does not create a perfect atmosphere, it does encourage most claims for benefits to not litigate.
That being said, I have been in practice for thirty-five years, all in ERISA. While the failure to provide an SPD looks like it is a big threat, the courts have never treated it that way. I have seen some penalties be added on where the employer was a bad egg and the employee litigated the matter through trial, but rarely otherwise.
You are really asking for the wrong document. An SPD is a communication piece and it often does not even have a correct description of the coverage. (See the Amato Supreme Court case).
Employers almost never prepare their own SPD. They hire an insurance company, a third party administrator or someone else to prepare the SPD. That is why your company has not idea which document is correct. Employees cannot sue on language in SPDs anymore, so there is less and less emphasis on being correct. A lawyer engaged to write an SPD would be accurate, but most other would not.
I advise you to call the Human Resources department at your employer and ask to speak to whomever is in charge of benefits. I would then ask that person to give you copies of the plan documents that provide for the benefits. Offer to pay the Xeroxing costs. You will have a copy of the plan document much quicker.
To answer the question, the penalty for failure to provide an SPD is statutory and is one that is in the full discretion of a court. No fiduciary hearing an appeal will pay you the penalty, but, if you sue after losing the appeal, you could ask a court to award the penalty. I would not hold my breath.