Should one print all the pages on appointment letter on letterhead?

Hello HRs,
I have seen many companies (includes large MNCs) printing first page of the appointment letter on letterhead and other pages on the normal paper with a company seal on it.
Seeking a guidance on the same.
Kind Regards,
Mansi

Not able to edit the head line, apologies for the typo error:
Should One Print All The Pages Of Appointment Letter On Letterhead?

Hello there,
Yes they can do; the same we are following for property documents means the first page is stamp paper and the rest of all are bond papers. the company seal and concern authority signature is valid.

Dear Anon:
The normal practice is the first page is on the company's letter head, while the second and successive page(s) (if any) are on the company's blank water mark sheets. The first and successive pages carry the initials of the authorized signatory , while the last page has the signature in full.
Putting the company's rubber stamp is optional.
This is the stated practice here.
Regars
Arif ur Rehman