can pen marks be cleaned off??

Use a q-tip dipped in 70% alcohol. You might want to go over the strap with a baby wipe to prevent it from drying out too much. If there is no patina on the strap at all though, I wouldnt do it.
 
I used regular erasers on pensils and worked great!
just be careful not to strip the leather...
oh and I have tried alcohol... not very good...
the ink kinda spread on the vachetta and got more harder to remove...
after I removed the pen mark with the eraser... I just applied apple conditioner.

also try Lvobsessed cleaning tips under the Thread CLEANING LV
Product: Denatured Alcohol
Uses: Remove ink stains as well as stains from rubbing up against a wall. Can also remove ink stains from Vachetteta
NOT FOR USE ON: Epi leather, Vernis body
Sources: Hardware stores, www.misterart.com/store/v...up_id=1542
Notes: Apply with cotton ball or swap and rub gently

Hope this helps:smile: