Without knowing the exact date of the years the Mid 2009 MacBook
13-inch computer was shipped to retail, to get the correct OS X DVD
from Apple would require you to call the Applecare or sales support
and see if you can get a replacement.
See link below, to find Snow Leopard retail 10.6.3 DVD at online Apple.
{Your computer may have shipped with a model-specific Snow Leopard
version on DVD -- if so-- that would be the correct one & a better deal.
Thus, to call them direct to ask, with your Mac serial number & payment
method (credit card) and valid address of record, to get physical media.}
By telling the systems expert at the Applecare or sales support main
phone service (see Apple site, contact Apple; if not in the US, see
the links in the Apple site you use to visit here) to ask them if you
can get the correct replacement; either by ordering retail 10.6.3
Snow Leopard DVD, or if your computer actually did ship with a
version of Snow Leopard on grey installer DVD media -- that would
mean that disc is an official part number -- I cannot tell, but Apple
sales support or Apple online main phone links may help you get it.
Your computer may have shipped with any one of the systems available
during the production run. According to http://mactracker.ca database
(download/application) they cite the systems as what yours may have:
Original OS Mac OS X 10.5.7 (9J61) - 'Leopard' build. mid-2009 only
Later OS Mac OS X 10.6 (10A432) - 'Snow Leopard' build. mid-2009 only
The appropriate 'original replacement software' would include those native
applications that the computer shipped with, when new. (The Retail 10.6.3
Snow Leopard only has the OS X and none of the complementary apps.)
So until you know what OS X it shipped with, new, the path is a guesswork
since if you did happen to ask about original system installer discs, and it
came up as having shipped with Leopard 10.5.7, that won't get you there.
• Contact - How to Contact Us - Apple:
https://www.apple.com/contact/
You'd then still need to buy a retail Snow Leopard 10.6.3 DVD from Apple
store online, and then after installing it, update to the last step, 10.6.8. At
that point could you log into the Mac App Store to see if you could find
evidence of the Lion 10.7 OS X you would have had to of bought online
as mentioned, with a redemption code sent to you via email, to use in the
online Mac App Store to enable download of the Lion system 10.7.
Since you have to contact the Apple Store online anyway, to either get a
replacement system disc set (especially if it shipped with Snow Leopard)
or to buy a retail OS X 10.6.3 Snow Leopard install disc; you should call
the online main Store number, perhaps the sales or applecare. Be sure to
have a payment method; and also have the MacBook serial number so
the Apple systems expert can check on the correct disc set.
If the original software kit was Leopard 10.5.7, no point in going there if
you need 10.6. replacement system DVD or later retail 10.6.3 install DVD.
You may or may not have fair experience with using the phone for this, as
some of the staff may not be familiar with these fringe older models.
An Apple store online page from which to order the retail 10.6.3 DVD:
• Mac OS X 10.6 Snow Leopard - Apple online:
http://www.apple.com/shop/product/MC573Z/A/mac-os-x-106-snow-leopard
If you get an OS X 10.6 or 10.6.3 system on correct installer DVD, the update
to have the final step in Snow Leopard, and access Mac App Store, is 10.6.8:
• Download 'combo update' for already installed Snow Leopard from DVD:
Mac OS X 10.6.8 Update Combo v1.1
For the cost to get Lion 10.7, you could order Mountain Lion 10.8; it is a better
older system than Lion 10.7 and it cost the same. To get anything newer than
10.6.8 you need to access the Mac App Store and use your AppleID to login.
That is where several steps may be avoided if your MacBook model had 10.6.
"You can buy online, chat, or call (800) MY–APPLE (800–692–7753),
7 days a week from 7:00 a.m. to 10:00 p.m. Central time." - Apple US
Another way to tell which OS X version your serial numbered MacBook 13-inch
Mid 2009 model may have shipped with, is to use this page and enter the S.N.
to see what comes up under Details...
• Mac Serial Number info - Lookup your Apple by serial number:
https://www.powerbookmedic.com/identify-mac-serial.php
Hopefully the effort isn't too far to go. You should have original DVD media
to then most easily tell what not to buy, if you have the grey label MacBook
13-inch media kit it shipped with, and the label says the version 10.6 above
then that would be it. Then a next step after install, would be 10.6.8 update.
{But that update won't work with the original 10.5.7 system disc.}
You could try & see if the computer may start up from OS X Recovery, if it was
installed in the computer at some point. If so, then you could use OS X Utilities
menu to attempt to go from that point forward. -- It would not bring back 10.7.5.
• About OS X Recovery - Apple Support
• Apple OS X and Time Machine Tips (also recovery info)
http://www.pondini.org/OSX/Home.html
Most/all App Store titles new, now, would not work on old 10.7.5 OS X.
Before you download & try to install any App it is good to read details.
If you happen to be where it may be next to impossible to get a physical install
DVD for Snow Leopard or a grey-label replacement system disc kit for your Mac
- you may be able to contact an Apple Authorized Service Provider, or perhaps
if there is an official Apple retail store with Genius bar, you may ask an expert if
they could help you get the correct system installed, to access online App Store.
• Apple - Find Locations - country selector:
https://locate.apple.com/country
Good luck in any event...!