i was recently given 2 air rifles and 2 air pistols from an old friend who does,nt use them anymore and i was wondering what they are worth.

1...relum tornado (serial no 47065) with nikko stirling tiara 4x28 in good condition
2...bsa mercury with no rear sight cant find serial number
3...webley & scott air pistol mark 1 (serial no 64487)
4...accles & shelvoke ltd acvoke (pistol)cant find serial number.

pics to follow shortly
where do i find serial numbers for bsa and acvoke.....