All prices in USD and do not include shipping, see end for shipping costs.
150mm Cattleprod 0 degrees 1-1/8" NOS or maybe a new take off that sat in a box of stems for years. $20 missing handlebar clamping bolts but I will thrown in some generic ones.
140mm Cattleprod 0 degrees 1-1/8" NOS and in much cleaner shape than above. Both this and above have original Z-bolt alloy binder bolt and wedge. $30
140mm Cattlehead 5 degrees 1-1/8" repo top cap with non-original cap bolt, but original wedge. Likely new take off or NOS. decent shape but also lived in a box of stems for a number of years. $25
140mm Cattlehead 0 degrees 1" have both a metal and plastic cap. Again I don't know if it is NOS or new take off, came from same box. Has cool black steerer clamp. $40 w/ both caps. $35 with just metal. $30 with just plastic. Sorry I will not sell one of the caps before the stem is sold.
An NOS 1-1/8" Girvin Flex stem for good measure $30.
Shipping to the UK/EU Uninsured air is the only reasonable option and is flat rate.
up to 500g is $19 which should cover anything above well wrapped in a bubble envelope. Syncros stems are around 230g give or take. It may be possible to ship one for $10 if I use a bubble envelope and no additional internal padding (i.e. package weight <250g). This choice and the risk would be yours.
Shipping to US for one stem is $12, airmail uninsured.
Black Syncros handlebars with shim
Rocky Mountain shoulder holder or similar era saddle
Flight Titanium red logo saddle in very good condition