Thank you all for your comments. I feel I should add that I will not be fondling Tom in ANY way (he got enough free kicks that way while I was making him). I am keeping him separate from a lady librarian I made not so long ago (pics on my blog) - I don't want her glasses to get steamed up. Also, I made a conscious decision not to recreate the bulge from the original pic - I think his likeness is potent enough without it.
And thanks for the tip re: thrift stores, but they are thin on the ground here in Holland. It's a good excuse for me to put an order in online - I know my local bead store doesn't have any gold chain, as I wanted some a few months back for a jewellery commission.