| Bidder | Amount | Date | 
|---|---|---|
| R****5 116 | €18.00 | 26.09.2019 17:27:46 | 
| Y****y 75 | €17.00 | 26.09.2019 17:27:46 | 
| R****5 116 | €16.00 | 13.09.2019 19:50:46 | 
| Y****y 75 | €15.00 | 13.09.2019 10:41:19 | 
| d****r 22 | €15.00 | 13.09.2019 10:41:19 | 
| Y****y 75 | €14.00 | 13.09.2019 10:41:04 | 
| d****r 22 | €13.00 | 13.09.2019 10:41:04 | 
| Y****y 75 | €12.00 | 13.09.2019 10:40:47 | 
| d****r 22 | €11.00 | 13.09.2019 10:40:47 | 
| Y****y 75 | €10.00 | 12.09.2019 22:37:52 | 
From the set of IPP37 exchange puzzles this is "Security Lock", Exchanged by Liang-Jen Wu.
rOpen the lock, using the key.
 The puzzle measures 14x12x2 cm.