I JUST PURCHASED A GIBSON A-1 MANDOLIN SERIAL # 22000 AND WOULD LIKE TO VERIFY THE DATE ej

Was it supposed to be an old one ?
I found A1's in the 22000 range on the site below as made in 1913-15.
Give the site a shot. No promises. They are listed on page 17, just click on the page # if my link does not go to it. Got a pik of one in that range. If you think it's one of these 100yr old instruments, get a professional appraisal. Good luck. Tag me with a comment about it if it is really old and value would be interesting. The second link does appraisals and have a pik also.
The Mandolin Archive Gibson Factory Mandolins 1900 1950Showing All Records
Blue Book of Mandolin Values Gibson Symmetrical Models Series Model 1