The saddle are all older, but many times, older means GOOD handmade quality materials. Lots of "newer" saddles are assembly line type production with CHEAP materials. Honestly, I would clean all of the saddles up and hold on to all of them. You NEVER know when you might need an extra, or when you need a variety to see what fits a horse right.
Make sure the leather is in good shape, especially the stirrup leather and the girth attachments. All those parts can be replaced if needed. "Squeeze" the saddles to see if any have a broken tree - they should not give when squeezed like a taco or squeezed cantle to pommel. Often, older saddles have very worn fleece on the underside. It usually can be replaced, but be prepared to pay A LOT for real fleece replacement (~$300 here in MD) or slightly less for synthetic fleece. If it isn't too worn, you can just compensate for the loss of padding by using a good pad. Look for a maker's mark on the excess billet holders, or under the fenders. If you find one, look it up online to determine a value.
If you have any Amish within driving distance, look in their community for a tack/harness shop. They are generally the best price and workmanship around! We use the local Amish community for EVERYTHING around here!
As for PCOS, I have had it since I was a teenager, but it went undiagnosed until I was in my 30's in 2005. My amenorrhea was attributed to me being active and muscular.... It took my husband & I 3 years to get pregnant with child #1, and we lost him at full term due to placental abrubtion, which is not uncommon with PCOS pregnancies. Unfortunately, I had a HORRIBLE Dr. during that pregnancy who did not follow the steps to monitor my pregnancy. I should not have lost my son... I was told I would not be able to get pregnant again, but was pregnant with #2 just 6 weeks later. Different Dr. this time, I was watched like a hawk and in his office for NS testing and ultrasounds 2-3x per week. Delivered a perfect baby girl at 36 weeks. I then had 2 miscarriages at ~12 wks before going thru fertility treatments. Baby #3 was also born at 36 weeks after close monitoring. Was told AGAIN I would not be able to get pregnant without further fertility treatments. Got an amazing blessing of baby #4 in May 2008 - a complete surprise, as it wasn't supposed to be possible. I was closely monitored again, and made it to 39 weeks before having a C-section.
Pregnancy IS possible with PCOS, but you need to be vigilant and be monitored closely. Insist on it. Do not let the Dr. blow you off and treat you like a "normal" pregnancy. I would not ever want someone to go through the heartbreak we experienced because we were naive' and believed the Dr. when he said everything would be fine, I was young, it was my 1st pregnancy, what could go wrong, etc.
. I would love to have a mini too someday! Hope your new mares birth goes well and It would be awesome if you put pictures of the foal up after he/she is born 
