WTB Williams 3 bolt cranksets

[speedster356]

Hi all, I've got myself what I was told is a 40s twin bar New Hudson tandem. Too far gone so it's in for a full restoration, it's got only one crankset, looks to be a Williams 44t 3 bolt, 6.5" crank arms. The drive side crank arm has an L on it and the ND crank arm has an R. So I'm looking for the others. I'm in New Zealand. Cheers Pete