This is a gorgeous set, in a rare discontinued floral bouquet/summer garden pattern, and trimmed in 22kt gold.  It also comes with a bud vase, which is not typical, but makes for a wonderful something extra with the tea setting, or just on its own. 

Lomonosov is made in  St Petersburg at the Imperial Porcelain factory in Russia.  The backstamp was first introduced in 1936, and goes all the way until there was  no longer a 'USSR'.  The color red indicates first quality.  In 1986 the backstamp changed just slightly, so based on this backstamp's stylization, I believe this set is pre 1986, most likely 1960s or 1970s.  A more current pattern uses the same florals, but has a gold 'grasses' pattern in between the bouquets rather than the basket/criss-cross used on this set.   

You may note that there are no saucers with this set.  I don't always use saucers when I have tea or coffee, but if you want to add to the set in the future, I suggest two things to find replacement saucers: 

1. Set up an automatic notification in online search ("Lomonosov saucers only" or "Lomonosov replacement saucers")

2. Consider a little bit of mix and match.  The modified pattern with grasses would like great with this, and will be easier to find, although depending on  your timing, may still take a bit of persistence. :) 

Tea set pieces and measurements:

 

1 Teapot with lid - 7 1/2" wide from spout to handle tip, appx 5" high with lid, holds approx 2 1/2 cups (20 ounces)

1 Sugar bowl with lid- 6" across handle to handle, 3 5/8" high without lid, 4 1/4" high with lid

1 Creamer - 5" across from spout to handle tip, 3 1/2" high

1 Vase - 4 1/2" high

6 Cups - 4" wide without handle, 4 3/4" with handle, 2 1/4" high

I am newer to selling on Ebay, but have had a shop on another platform for almost 2 years with more than 400 sales as of this posting and 5/5 average customer reviews. If you would like more information I can send you a link to that shop.  I do not list it here, as Ebay prefers sellers to not advertise other selling apps, as one would expect. :) 

I am proud of the items I sell, and strive to provide accurate detail in both pictures and words. My goal is to make your buying experience positive, and as streamlined as possible. I hope you will love the item you receive as much as I loved it when I found it. IF, HOWEVER, I MISSED SOMETHING, OR MADE A MISTAKE, PLEASE E-MAIL ME BEFORE LEAVING FEEDBACK SO WE CAN RESOLVE TOGETHER. I WILL WORK HARD TO EARN YOUR TRUST.  I ALWAYS APPRECIATE YOUR FEEDBACK AND COMMUNICATION.