Where on earth is that Oyster card?

R has been searching for her Oyster card for weeks.
The washing machine has been making some strange noises for the past couple of washes.
The two are linked when finally the washer stopped and flashed up an error message. The internet suggested we checked the filter and in there was an eighth of an Oyster card! Jim took it to pieces, he collected a hair clip (R), a 10p piece and some fluff, but no sign of the rest of the Oyster card.
The washer is working again, keep your fingers crossed, long may it continue.