Never consider a piano which lacks a metal frame.

Check the case for wear and tear and, significantly, any signs of woodworm.

Inspect the keys for damage and depress each one to test for sluggish movement. Check whether it is out of tune and listen carefully for unusual noises which may be a sign major faults within the instrument.

Press the pedals to make sure they're in working order.

Ensure that all strings are present and intact as replacement can be costly. Examine the tuning pins for corrosion and to ensure that they're solidly mounted.

While inside, pay close attention to the condition of all the working parts and their alignment, not forgetting the soundboard behind the strings. Remember to check the hammer felts for wear.

It's a lengthy checklist. Unless you're totally confident, seeking professional help is the only sensible option. Simply call on Peter Smith & Sons at any time for an appraisal and a realistic valuation.