Blancpain Leman Grand Date Flyback mit 2 Jahren Garantie

DD Model 1803 1978 sapphire or acrylic?
Found an 18ct DD model 1803 from 1978. It is on a rolex leather strap the asking price is ?3,600.00 which is approx. $5,490 USit is in excellent condition and genuine, black dial with 18ct indices and hands2 questions 1: would this model have a sapphire crystal or acrylic, glass2: The watch is in excellent condition and genuine but is it a fair priceComments would be very much appreciated

Leather/Hornback Strap Cleaning/Polish
Hi folksI have several leather strapsI am cool w/ maintaing the "regular leather"my real question is on the hornbackSuggestions on how to clean, preserve and polish??First hand experiance?Product names?thanx in advancebw

My dilemna about chinese movements
I have had a bias against Chinese watches and movements pretty much since I began collecting watches as a hobby. I hate the counterfeiting industry, which is nearly entirely run from China. From everything I've seen and read China has no long standing history of watch making or what I'd consider respectable brands. The Chinese watches I've seen browsing the internet look cheap and cheesy and seem to use derivative, generic styles. I vowed never to buy a Chinese watch or a watch with a Chinese movement. I have been considering buying an Android for awhile now, and when I came across a Naval 2G Skeleton Automatic (AD539BK) for $106 I really wanted to pull the trigger.....until I did some research and found that it has a Chinese made Seagull movement in it. I've read generally good things about Seagull movements, but I still feel conflicted. Does anyone share my blanket bias? Are Seagull movements, or any other Chinese brand, worth breaking my vow for? I like that Android, and it's priced

How to lay your Mechanicals?
Edit, After reading more of my scheduled Horology 101 reading I found what I neededSorry to bother everyone.

PP 5167 on small wrists?
Hi folks, I'm considering trading a few of my watches towards a nice PP 5167 or AP 15450.I haven't been able to find a 5167 to try on, but when I tried the 5164a in Vegas, I felt it too big on my skinny 6 flat wrists, particularly due to the bulge of the rubber strap.Here's a pic of the 5164 on my wrist:And the 15450, which felt better on my wrist:I know the 5167 is ~1mm smaller, but will it fit better on my small wrists or is the bulge still going to be an issue? Or should I try to find a pre-owned 5165 which is 38mm? Or go with the 15450?If I decide to opt for the 5165 or AP 15450, how do they hold their value if I decide to upgrade again in a few years?