Standard Transfer Form?

I bought shares in AGP recently and have just received a "Standard Transfer Form" from Etrade.

What's this all about? All my previous trades have been fully electronic with no such paperwork. No all of a sudden I've got this form complete with return express post envelope?

I assume this is a legit form and not a scam? First time I've seen one and I've been buying and selling for years without it.

Do you trade through eTrade, assume you do.

Only time I've seen that form is transfering HIN.

Could you have held them under a different SRN or HIN (like company sponsored) and initiated a CHESS Sponsorhip Transfer?

Yes I trade with Etrade.

The form is already filled out with details of the seller and my details also so I just need to sign and post it.

Main thing I'm wanting to confirm is that it's a legit form and not a scam etc?